howjamin Posted February 1, 2011 Report Share Posted February 1, 2011 I've been working out the bugs and ticks out of the rebuild I completed not to long ago. Learning a bit more as I go. Now I have this weird (at least to me it's weird) issue taking place. When I fire the motor cold, it's fires right up. After driving for a while, shutting it down, doing what I need to do. I go to fire it back up and nothing. However, If I let it sit and get cool it'll fire right back up. Is there any ideas of what it may be or where to start looking for the issue? Quote Link to comment
DanielC Posted February 1, 2011 Report Share Posted February 1, 2011 Start with the big three. Compression, Ignition, Fuel. Given all three in the proper amount, and time, the engine will run. Millions of engines prove that everyday. Check for spark when it is warm. Go smell the exhaust when it will not start. Smell gas, suspect ignition. No gas smell, suspect fuel. Another trick with an engine that will not start is to dump a little gas straight down the carburettor. It should fire, maybe with a little cranking. It is possible that the compression is going bad when the engine is warm, so, do not rule that out. In fact, the first test I would do with the engine is a compression test. Definitely do it warm, in your case. Quote Link to comment
howjamin Posted February 1, 2011 Author Report Share Posted February 1, 2011 Strong smell of gas coming from exhaust. Getting spark as well. Quote Link to comment
DanielC Posted February 1, 2011 Report Share Posted February 1, 2011 Is the compression good? Check the timing of the spark. You can look up what it actually should be, but about 10 degrees before TDC should make the engine at least start. Quote Link to comment
howjamin Posted February 1, 2011 Author Report Share Posted February 1, 2011 I will be able to do a compression check once i get the truck home. Right now it's behind a locked gate at my local dump. Had to leave it there and take my wife to the hospital (from the dump in her dodge) cuz I (not intentionally) stabbed her hand with a hay fork. Quote Link to comment
MikeRL411 Posted February 1, 2011 Report Share Posted February 1, 2011 I've been working out the bugs and ticks out of the rebuild I completed not to long ago. Learning a bit more as I go. Now I have this weird (at least to me it's weird) issue taking place. When I fire the motor cold, it's fires right up. After driving for a while, shutting it down, doing what I need to do. I go to fire it back up and nothing. However, If I let it sit and get cool it'll fire right back up. Is there any ideas of what it may be or where to start looking for the issue? Vapor lock? Quote Link to comment
howjamin Posted February 2, 2011 Author Report Share Posted February 2, 2011 A friend of mine had said that as well (Vapor lock). How would I go about solving that issue? The carb sits about 3in off the intake. Quote Link to comment
DanielC Posted February 2, 2011 Report Share Posted February 2, 2011 I would not suspect vapor lock this time of the year. Quote Link to comment
howjamin Posted February 3, 2011 Author Report Share Posted February 3, 2011 Ok guys, I have spark, fuel and good compression 140 all the way down. But yet the issue is still occurring. I've even changed out the fuel filter. Quote Link to comment
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