Question about 1992 Buick Regal
Check that you have installed correct type of spark plugs and wires are well fitted. SPARK PLUG 3.5 V6 Type Champion RC10PYP4 Plug gap 1.0-1.1 mm (0.039-0.043 in.)
Posted on Jun 03, 2008
I had the exact same problem. The mechanic found a spark plug that was leaking on the back of the engine that was a pin to get to.
He replaced all plugs and wires and I no longer have this problem, so you may be onto something with the plug wire being loose.
Posted on Jul 22, 2008
SOURCE: 1997 f150 4.6ltr engine has
thank you for responding, I went back to basics. New plugs began corroding on#3 & #7 cyl, causing a short(missfires).Tested the coil packs,& I recalled #3 cyl head was cracked, it was replaced with rebuilt head. As for the oil gauge flucuating, crank shaft bearings pitted and worn on #3 & #7cyl, due to the coolant(an apperantcommon problem..I took the truck in for an oil change,a ctc rookie put 5w30 instead of 10w30 as requested,in which caused the oil pressure to fluctuate. I dumped the the oil put 10w30 in and some lucas. 2 weeks later no ticking noises and no oil pressure changes.thankgod for lucus. its too cold to roll a set of bearings in the driveway. thanks again for your input. p s a 1997 f150 4.6ltr come with 2 sizes of serpentine belts, be careful of which one you install, we blew the bearings out of 2 new waterpumps,and for the last tip, the dealership uses a pair of vicegrips and an extra helping hand to set up the timing chains,that is what i was suggested to do by there top engine tech. prove me wrong. works like a charm.
Posted on Nov 07, 2008
Try putting somw SEAFOAM into your tank. It either your O2-sensor, or EGR-valve. Alot of the time, SEAFOAM will clean these sensor up????
Posted on Feb 07, 2009
SOURCE: car is fluctuating rpm's at
the throttle plate may be gummed up and need cleaning.if the check engine light is on and codes for the throttle are logged this may be a warranty issue.
Posted on May 05, 2009
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