Default 225 Dauntless Lost power 

Old 12-04-2011, 11:04 PM   #1
KcSolomon is offline
KcSolomon
New Jeeper
Vehicle(s): 1970 Jeep CJ5, V6, Manual
 
Join Date: Jan 2011
Location: Pensacola, FL
Posts: 11
Images: 4
Thanks: 3
Thanked 0 Times in 0 Posts
Rep Power: 0 KcSolomon is on a distinguished road
Hey everyone,
I need help once again. This time my 1970 CJ5 with a Dauntless 225 is losing power. It starts and runs fairly good. It takes a little warming up up then it idles like a dream. I went out of town for a week and when I got back and fired it up the first time it backfired a bit. When I drove it it had no power.
I have noticed that the oil pressure is a staying down around 40. Normally it would get up to around 60 while driving. that could be because of the loss of power. Another thing is backfiring when I first start it up.
I am a newbie when it comes to mechanics. If it were not getting spark or gas I could troubleshoot something. With this issue I am lost. My first guess is a fule air mixture. Please help.

Thanks,
KC

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote
Register as a Member and remove this add!

Vote for Jeep-CJ.com daily!
Vote for Jeep-CJ.com

Default Re: 225 Dauntless Lost power 

Old 12-05-2011, 10:37 AM   #2
JR74CJ5 is offline
JR74CJ5
Full Time Jeeper
Vehicle(s): 1974 CJ5 ~ 304 V8 (DUI distributor upgrade) NEW cam and distributor gear set by MSD - SM420 - Dana 20 TC - Dana 30 F Warn Prem. Lock-outs with Stage 8 locking hub bolts and 44 R - 4.27 Gear Ratio's - Running 33" BFG Mud-Terrain T/A KM2 Tires - Tilt / Power Steering - Hooker Super Competition Tuned Fenderwell Headers w/ Thrush "Super Hush" Mufflers and Stage 8 Locking Header Bolts - Warn M8000 Winch - Hydraulic Clutch Conversion - 3-1/2" OME YJ Lift Spring Conversion
 
JR74CJ5's Avatar
 
Join Date: Jan 2011
Location: Sacramento, CA
Age: 30
Posts: 2,090
Images: 80
Thanks: 1,064
Thanked 240 Times in 192 Posts
Rep Power: 6 JR74CJ5 is on a distinguished road
Before messing with air / fuel mixture, check for vac leaks, or exhaust leak (though you'd probably hear the exhaust leak if that... )

I say this assuming the Jeep ran good with power before going out of town, and just started doing this when you got back.

The timing, and fuel / air mixture would not have changed... Neither should have any vac lines or exhaust either, I get that... But... You also mention backfiring, which would lead me to the same conclusions.

Timing
Mixture
Vac Leaks
Charging system / low bat level, inopp alt (just a thought)
Points in distributor?
Exhaust leak at the heads

Where are we loosing power? And what exactly is it doing while loosing power? Bogging down? or simply no-going good while motor "sounds" normal?



~ JR
__________________

JR - EVC3

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: 225 Dauntless Lost power 

Old 12-05-2011, 12:13 PM   #3
BajaEdition is offline
BajaEdition
Resident 'Old' Jeep Shaman
Vehicle(s): 67 cj5,225 Dauntless, D30,chrome molies, detroit, D44, full floating detroit, custom steering, disc all the way around,2 inch lift on 31s, armored up 70 cj6 4 inch lift
 
BajaEdition's Avatar
 
Join Date: Aug 2009
Location: Riverside Ca
Age: 56
Posts: 2,908
Images: 141
Thanks: 56
Thanked 532 Times in 156 Posts
Rep Power: 8 BajaEdition is on a distinguished road
check fuel delivery for a partially clogged line
look over the carb to see if it is working good

that was the easy part

checking the vacuum lines is a little messy but but well worth the time replacing them with new tubes is even better.

with the engine running, can you hear any hissing sound?

start engine with a timing light hooked up, use it to check if each spark plug wire is conducting.

is the distributor tight? or does it spin

check the timing

replace the ballast resistor, this could burn out the condenser if it went bad.

replace the spark plug wires and the spark plugs, gapping them to spec

, if non of that worked, we go for the distributor, what do the cap and rotor look like inside?

replace the condensor and try again.

next the points.

nowhere is the bad news, if nothing has worked, our carb is working fine and we just get weakpower, we have redone the ignition system and still get weak power, it is time to replace the ignition system, you see Kaiser for some reason chose to use a cheaply made distributor in that engine and it is problematic. The gears strip easily and it can wander or just not turn in time, and this can happen at any time.
there are several alternatives, you can get HEI Distrbutors for around 230 clams that are 1 wire rewires.
report back after all the test please so we can help more.
__________________
If you really want to know if your a Jeeper, get a CJ. Spend months sourcing parts and restoring it with the sweat of your own work, or go out and get a Wrangler and be part of the cookie cutter Jeep crowd.

BlueRibbon Coalition:
Preserving Our Natural Resources FOR the Public Instead of FROM the Public

http://www.sharetrails.org/
www.justgoodtrails.com

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote
The Following User Says Thank You to BajaEdition For This Useful Post:
KcSolomon (12-08-2011)

Default Re: 225 Dauntless Lost power 

Old 12-06-2011, 03:16 PM   #4
hagar is offline
hagar
Jeeper
Vehicle(s): 47 CJ2A 225V6 SM420 D18 D30 5:38 Power Lok D44 5:38 Flanged Detroit Locker
 
Join Date: May 2010
Location: Riverside CA
Posts: 215
Thanks: 0
Thanked 23 Times in 23 Posts
Rep Power: 5 hagar is on a distinguished road
If you can get it to run, connect a vacuum gauge to the intake manifold.
You want a reading of 16"-18" of vacuum and a steady needle (at sea level), lower readings at higher elevations. Steady, not pulsating, needle is important.
Anything else and you could have valve/timing issues, exhaust, fuel,or vac leak problems.

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: 225 Dauntless Lost power 

Old 12-07-2011, 10:33 PM   #5
KcSolomon is offline
KcSolomon
New Jeeper
Vehicle(s): 1970 Jeep CJ5, V6, Manual
 
Join Date: Jan 2011
Location: Pensacola, FL
Posts: 11
Images: 4
Thanks: 3
Thanked 0 Times in 0 Posts
Rep Power: 0 KcSolomon is on a distinguished road
Quote:
Originally Posted by JR74CJ5 View Post
Before messing with air / fuel mixture, check for vac leaks, or exhaust leak (though you'd probably hear the exhaust leak if that... )

I say this assuming the Jeep ran good with power before going out of town, and just started doing this when you got back.

The timing, and fuel / air mixture would not have changed... Neither should have any vac lines or exhaust either, I get that... But... You also mention backfiring, which would lead me to the same conclusions.

Timing
Mixture
Vac Leaks
Charging system / low bat level, inopp alt (just a thought)
Points in distributor?
Exhaust leak at the heads

Where are we loosing power? And what exactly is it doing while loosing power? Bogging down? or simply no-going good while motor "sounds" normal?



~ JR
It's struggling to start. Turns over good but takes a long time to fire. Once it starts running it does not have any power. I don't have a RPM gauge but it sounds like it is running slower.
I checked the exhaust and found that two of the bolts had worked loose. I tightened them but it made no difference.
The battery is only a few months old. Both the battery and and alternator are working fine.
The only hissing sound is air being sucked in the air filter. I can't place any other hissing sounds.
There are no vacuum lines on my jeep. I don't have a vacuum gauge. If y'all think that a vacuum issue could be the cause I will purchase a gauge tomorrow.
A friend of mine has a timing light and is bringing it over tonight. We'll check the spark plug lines.
The distributor is tight. Somewhere along the line to me somebody changed the distributor for what looks like a Chevy distributor. I found this out from the guy I buy my parts from a few months back.
The spark plugs were replace over the summer. I gaped the to spec then.
Thank y'all both for all the ideas and instruction. I will keep you up to date on my findings.

Thanks,
KC

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: 225 Dauntless Lost power 

Old 12-08-2011, 03:05 AM   #6
67Jeepster is offline
67Jeepster
New Jeeper
Vehicle(s): 1998 TJ, 1967 C101 Half Cab
 
67Jeepster's Avatar
 
Join Date: Dec 2011
Location: Santa Cruz, CA
Age: 67
Posts: 6
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 0 67Jeepster is on a distinguished road
If the timing marks are way off, stop - do not adjust timing yet. First you need to see if the timing chain has jumped a tooth.
1. Split firing order in half - 1-6-5 - 4-3-2 - the numbers are cast into intake manifold.
2. Take the valve cover off the head with the 4th cylinder (4)
3. Remove the coil wire from the distributor and bump the starter until the timing mark is approaching the timing pointer.
4. When the TDC make reaches the pointer, both intake and exhaust rockers should be moving. If they are not both moving, your timing chain has jumped.
5. Replacing the timing chain and sprockets correctly should put the ignition timing back in the correct location.
Running with the timing chain one tooth off will show loss of power, two teeth might barely run, three teeth may damage valves and pistons.

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote
The Following User Says Thank You to 67Jeepster For This Useful Post:
KcSolomon (12-08-2011)

Default Re: 225 Dauntless Lost power 

Old 12-08-2011, 10:38 AM   #7
BajaEdition is offline
BajaEdition
Resident 'Old' Jeep Shaman
Vehicle(s): 67 cj5,225 Dauntless, D30,chrome molies, detroit, D44, full floating detroit, custom steering, disc all the way around,2 inch lift on 31s, armored up 70 cj6 4 inch lift
 
BajaEdition's Avatar
 
Join Date: Aug 2009
Location: Riverside Ca
Age: 56
Posts: 2,908
Images: 141
Thanks: 56
Thanked 532 Times in 156 Posts
Rep Power: 8 BajaEdition is on a distinguished road
Did you say the engine has no vacuum lines at all?
a 70 CJ should have a few, I could go out and count but it should have a couple to the carb and one to the distributor at least
__________________
If you really want to know if your a Jeeper, get a CJ. Spend months sourcing parts and restoring it with the sweat of your own work, or go out and get a Wrangler and be part of the cookie cutter Jeep crowd.

BlueRibbon Coalition:
Preserving Our Natural Resources FOR the Public Instead of FROM the Public

http://www.sharetrails.org/
www.justgoodtrails.com

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: 225 Dauntless Lost power 

Old 12-08-2011, 11:04 AM   #8
KcSolomon is offline
KcSolomon
New Jeeper
Vehicle(s): 1970 Jeep CJ5, V6, Manual
 
Join Date: Jan 2011
Location: Pensacola, FL
Posts: 11
Images: 4
Thanks: 3
Thanked 0 Times in 0 Posts
Rep Power: 0 KcSolomon is on a distinguished road
Quote:
Originally Posted by BajaEdition View Post
Did you say the engine has no vacuum lines at all?
a 70 CJ should have a few, I could go out and count but it should have a couple to the carb and one to the distributor at least
Let me correct myself. There is 1 line from the driver side valve cover to the carb. I can see where the vacuum line would connect to the distributor but there is no hose and if there were I don't know where the other end of the hose should be connected.

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: 225 Dauntless Lost power 

Old 12-08-2011, 11:07 AM   #9
JR74CJ5 is offline
JR74CJ5
Full Time Jeeper
Vehicle(s): 1974 CJ5 ~ 304 V8 (DUI distributor upgrade) NEW cam and distributor gear set by MSD - SM420 - Dana 20 TC - Dana 30 F Warn Prem. Lock-outs with Stage 8 locking hub bolts and 44 R - 4.27 Gear Ratio's - Running 33" BFG Mud-Terrain T/A KM2 Tires - Tilt / Power Steering - Hooker Super Competition Tuned Fenderwell Headers w/ Thrush "Super Hush" Mufflers and Stage 8 Locking Header Bolts - Warn M8000 Winch - Hydraulic Clutch Conversion - 3-1/2" OME YJ Lift Spring Conversion
 
JR74CJ5's Avatar
 
Join Date: Jan 2011
Location: Sacramento, CA
Age: 30
Posts: 2,090
Images: 80
Thanks: 1,064
Thanked 240 Times in 192 Posts
Rep Power: 6 JR74CJ5 is on a distinguished road
Quote:
Originally Posted by KcSolomon View Post
I can see where the vacuum line would connect to the distributor but there is no hose and if there were I don't know where the other end of the hose should be connected.
I believe that would be your Vac Advance...

What distributor has it been changed to? Is it a self contained HEI? or do you still have a functioning ignition coil?

The vac advance could very well be your problem, though I don't understand how it just started this loss of power after you returned from a trip...
__________________

JR - EVC3

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: 225 Dauntless Lost power 

Old 12-08-2011, 11:20 AM   #10
BajaEdition is offline
BajaEdition
Resident 'Old' Jeep Shaman
Vehicle(s): 67 cj5,225 Dauntless, D30,chrome molies, detroit, D44, full floating detroit, custom steering, disc all the way around,2 inch lift on 31s, armored up 70 cj6 4 inch lift
 
BajaEdition's Avatar
 
Join Date: Aug 2009
Location: Riverside Ca
Age: 56
Posts: 2,908
Images: 141
Thanks: 56
Thanked 532 Times in 156 Posts
Rep Power: 8 BajaEdition is on a distinguished road
I have to agree, something is wrong here, that engine has a few vacuum lines that need to be hooked up to be able to have power, one to the vacuum advance is one, the one from the valve cover is a big hose going to the air filter, it is a smog device, PCV, but their are a few other lines. that need to be there.
__________________
If you really want to know if your a Jeeper, get a CJ. Spend months sourcing parts and restoring it with the sweat of your own work, or go out and get a Wrangler and be part of the cookie cutter Jeep crowd.

BlueRibbon Coalition:
Preserving Our Natural Resources FOR the Public Instead of FROM the Public

http://www.sharetrails.org/
www.justgoodtrails.com

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote
Reply

Bookmarks

Tags
225, dauntless, lost, power


Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
dauntless 225 fan? josh84diffenbach Drivetrain 1 08-09-2011 04:09 PM
Lost ptitdragon Introductions 4 02-23-2011 06:00 PM
Lost my brakes and lost power polish85 Drivetrain 6 11-22-2010 10:34 AM
304 vs Dauntless dave123 Drivetrain 20 04-01-2010 07:52 PM
??? Im lost??? fishinfool98 Sand, Dirt and Mud 3 05-08-2009 01:26 PM


Vote for Jeep-CJ.com