I have an '05 LX that I recently purchased. I've been going through and fixing some minor issues along with some regular maintenance items. My biggest issue is that the truck doesn't want to start when the engine is hot. Symptoms:
-Cold start, cranks right up
-Warm engine shut off for ~10 min, cranks right up
-Warm engine shut off for 20-30min+, fails to crank on first try, cranks right up on second try
-Runs perfectly, no CEL
The P/O was upfront about this issue during the sale and claimed to have narrowed it down to a leaking injector. This made sense since I've had a similar issue with the exact same symptoms on an older Yukon that was in fact, due to leaking injectors. He even gave me a new set of OEM injectors (unfortunately for 06+ engines) to swap out.
So I sent the injectors off to be cleaned/reconditioned. They weren't as bad off as I had hoped, and none leaked before or after the reconditioning. The issue is still present, no better or worse than before. Some other things I fixed/replaced while I was doing this:
-Injector seals
-Fuel damper
-Valve cover gaskets
-Spark plugs
-All vac lines replaced with silicone
-PVC valve and hoses replaced with OEM
What should I be looking at next?
-Cold start, cranks right up
-Warm engine shut off for ~10 min, cranks right up
-Warm engine shut off for 20-30min+, fails to crank on first try, cranks right up on second try
-Runs perfectly, no CEL
The P/O was upfront about this issue during the sale and claimed to have narrowed it down to a leaking injector. This made sense since I've had a similar issue with the exact same symptoms on an older Yukon that was in fact, due to leaking injectors. He even gave me a new set of OEM injectors (unfortunately for 06+ engines) to swap out.
So I sent the injectors off to be cleaned/reconditioned. They weren't as bad off as I had hoped, and none leaked before or after the reconditioning. The issue is still present, no better or worse than before. Some other things I fixed/replaced while I was doing this:
-Injector seals
-Fuel damper
-Valve cover gaskets
-Spark plugs
-All vac lines replaced with silicone
-PVC valve and hoses replaced with OEM
What should I be looking at next?