Engine Am I experiencing Vapor Lock? (AMC 360)
ColoradoDerek
Jeeper
Hello again!
Long time no talk!
My jeep is doing well, however it still has one problem that I think I know what it is, but want your guys expert opinions to confirm/deny what I think.
What I think it is, is, Vapor lock.
What I think I can do, is, replace the metal line with a rubber fuel line. I'm looking for opinions on if this is the recommended fix also!
Symptoms:
Jeep fires up and idles just fine in my car port. I've let it idle for at least 15 mins before but maybe longer. It WILL occasionally, for no reason, kind of lose the RPM's (idle) and then like, shut off. It sounds like it would sound if it was running out of gas. I just assume its an older engine (AMC 360, unsure of the year) and that's why it does that, but maybe that is a symptom I'm not giving enough credit to. I can just turn the key, push the gas pedal and it will fire back up and idle again, usually not shutting off again but honestly, I've not let it sit idle for that long so unsure if it would happen again.
So, I start driving it. It drives fine. I mean, its rough compared to a newer vehicle right? supposed to be? I think so, but none the less, it runs fine. Idles at stop lights, etc. 5-10 minutes later, it will start to do what I call "mini-backfire". It sort of backfires, but usually its while I'm pulling out (so higher revs) and then while I'm shifting gears (like say I went into 2nd too slow) it will kind of "mini-backfire" for a few seconds then starts running again. Also, 5-10 minutes in, it starts to not idle so well at stop lights. it WILL idle, but it struggles and I kind of have to keep reving it up to keep it alive. sometimes it just shuts off when I engage the clutch in preparation to stop at a light. it will fire back up at this point but takes a few turns of the key and pushing of the gas pedal to get it to do it.
After a few minutes of it acting like that, it will then shut off at a stop sign or red light and then not turn back on. I can keep trying until the battery dies. Nothing. it just makes that sound you hear until the battery dies. unsure how to type that out. "rurh rurh rurh" ?? anyway....
Let it sit for 15 to 20 minutes, then it will fire back up. doesn't need jumped unless I run the battery down trying to start it which I don't do anymore LOL.
The fuel line coming out of the fuel pump is metal and it bends 180 degrees and goes RIGHT UP between the fuel pump and the engine block literally less than 1/2 an inch from the block. Once it gets to the top, it bends again, goes about 6 more inches then turns into a rubber fuel line which goes to the filter then to the carb.
What would you think the issue is with those symptoms?
Long time no talk!
My jeep is doing well, however it still has one problem that I think I know what it is, but want your guys expert opinions to confirm/deny what I think.
What I think it is, is, Vapor lock.
What I think I can do, is, replace the metal line with a rubber fuel line. I'm looking for opinions on if this is the recommended fix also!
Symptoms:
Jeep fires up and idles just fine in my car port. I've let it idle for at least 15 mins before but maybe longer. It WILL occasionally, for no reason, kind of lose the RPM's (idle) and then like, shut off. It sounds like it would sound if it was running out of gas. I just assume its an older engine (AMC 360, unsure of the year) and that's why it does that, but maybe that is a symptom I'm not giving enough credit to. I can just turn the key, push the gas pedal and it will fire back up and idle again, usually not shutting off again but honestly, I've not let it sit idle for that long so unsure if it would happen again.
So, I start driving it. It drives fine. I mean, its rough compared to a newer vehicle right? supposed to be? I think so, but none the less, it runs fine. Idles at stop lights, etc. 5-10 minutes later, it will start to do what I call "mini-backfire". It sort of backfires, but usually its while I'm pulling out (so higher revs) and then while I'm shifting gears (like say I went into 2nd too slow) it will kind of "mini-backfire" for a few seconds then starts running again. Also, 5-10 minutes in, it starts to not idle so well at stop lights. it WILL idle, but it struggles and I kind of have to keep reving it up to keep it alive. sometimes it just shuts off when I engage the clutch in preparation to stop at a light. it will fire back up at this point but takes a few turns of the key and pushing of the gas pedal to get it to do it.
After a few minutes of it acting like that, it will then shut off at a stop sign or red light and then not turn back on. I can keep trying until the battery dies. Nothing. it just makes that sound you hear until the battery dies. unsure how to type that out. "rurh rurh rurh" ?? anyway....
Let it sit for 15 to 20 minutes, then it will fire back up. doesn't need jumped unless I run the battery down trying to start it which I don't do anymore LOL.
The fuel line coming out of the fuel pump is metal and it bends 180 degrees and goes RIGHT UP between the fuel pump and the engine block literally less than 1/2 an inch from the block. Once it gets to the top, it bends again, goes about 6 more inches then turns into a rubber fuel line which goes to the filter then to the carb.
What would you think the issue is with those symptoms?