Extremely Poor Idle; Looking for Last Resorts
09-26-2018, 02:03 AM
#11
Are you running the stock cat?
09-26-2018, 02:15 AM
#12
Wouldn't hurt to run a good bottle of fuel system cleaner (if you haven't already). Regarding the coil packs you need to check if there is a lot of oil residue on any of them. This would indicate oil getting into the plug ports while the engine is running and that oil would effectively drown the coil/s causing them to misfire then eventually burn out completely. At that mileage/age its not uncommon for the valve cover seals to need replacement. Good news is the VC gasket and spark plug tube set does not cost much from the dealer.
See if that makes any difference then if not we can look at swapping out (more) parts.
See if that makes any difference then if not we can look at swapping out (more) parts.
09-26-2018, 03:36 AM
#13
Moderator
Your description points to burnt or bent valves, especially as the problem is at idle only. A leakdown test is next.
Last edited by Billman250; 09-26-2018 at 03:40 AM.
09-26-2018, 04:26 AM
#14
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