Misfire P0300 HELP
So I got the P0300 code. I thought it was just a bad
coil so I replaced. Wasn't it. Did a tune up. Never
fixed it. So I pulled valve covers found #5 cyl to
have a bent push tube. Checked all of the others.
Number the only one. Replaced tried again still the
same. So I've replaced timing chain oil pump the
oil pick up o-ring. Map senors. At high idle it runs
fine. It won't stay running at all. I even replaced the
injector on #5 to. I'm lost not sure we're to go or
what to do.
You may have some issues with the valve train, vacuum leaks need to be checked for, but why would a push rod be bent in the first place would be the question. P0300 CHEVROLET - Cylinder Misfire Detected Random Cylinders- Possible causes - Faulty spark plug (s) - Faulty ignition coil (s) - Clogged or faulty fuel injector (s) - Intake air leak - Fuel injectors harness is open or shorted - Fuel Injectors circuit poor electrical connection - Ignition coils harness is open or shorted - Ignition coils circuit poor electrical connection - Insufficient cylinders compression - Incorrect fuel pressure- The P0300 code means that a cylinder(s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. If no leak are found the next step is to replace the spark plugs. If the problem persist more tests needs to be done to diagnose problem....
Search GMC Yukon Questions
GMC Yukon Experts
Related Models For Sale