My 98 vt commodore has a vibration coming from the exhaust, idles low, has white spark plugs, sounds like its sorta missing, a fumey smell and a lil white smoke coming from exhaust. i have replaced oi
my 98 vt commodore has a vibration coming from the exhaust, idles low, has white spark plugs, sounds like its sorta missing, a fumey smell and a lil white smoke coming from exhaust, a lil condensation too. i have replaced oil, oil filter, plugs, leads, fuel filter, oxy sensors and have put injector cleaner through the fuel with 98 octane fuel, please help!!!
i also had a new key and ignition contact put in too.
i have owned this car for two years and hasnt missed a beat.
i replaced fuel pump and front brakes,
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Is there any white smoke? Could be your valve stem seals. But the Toyota Corolla in this year's is known for burning oil. If you are having to add more than 1 quart per month. You may have a problem. Check for the obvious. Milky oil. Idle it to op temp and smell exhaust for burnt oil smell. Hit the gas...see any white smoke? Open your radiator cap after running and smell for exhaust... If all is well then you have a normal running toyota corolla. These cars are champs. They just tend to burn a Lil oil here and there.
A misfire code is set because one of three things is missing or not right: spark, gas, or compression. You checked compression and it's good, equal to the other cylinders? And there is spark on #8? That leaves a fuel problem, then. How does the spark plug look on #8- if the appearance is white, almost a blistered look to the bottom of the plug, that is an indication of lean running- not enough gas in the mixture at that cylinder. You may have an injector problem on #8.
With the miss you have it could be a few things.
did you change all the coil packs?
did you refit the heat shields to the new spark plug needs as these can cause a miss .
it could be the electronic module under the coil pack.
it could be a faulty injector or fuel problem..
Inlet manifold gasket loose (valley gasket) my vt was running like **** at idle only , tightened the 12 bolts near the injectors runs perfect now if that doesn't fix it the gasket may be wrecked $70 kit or get it done Water was getting into the throttle body and into the cylinders causing irregular and irratick loping and rough idle it had me thinking it was all different things like leads , air leaks , bad fuel , bloked injectors , computers , coils You'll probably find some loose one their is a torque sequence but try just tightening them start with middle side 4 first hope this helps and saves people money
When you know the symptom who needs codes?And if there was a code it probable say lean bank 02. why simple you have a misfire. the smell rich exhaust the shake and sputter in drive. 2 causes the Expedition suffer from ,An open EGR valve.If you can change a fuel filter and change a spark plug you can test this. when the engine is running and misfire at idle and the vehicle is warmed up and at operating temperature. Turn off engine. Go to the EGR is it hot to touch. because if it is it open and this the the culprit.Another misfrie is from COP (coil on plug.)When you change the spark plug where any of the spark boot torn or worn that spark can go through. Or even a faulty COP will do this .To find it you have the engine running and lift one COP out of the cylinder and listen for a engine drop if the engine RPM drop the COP is good if no change in engine the COP is bad. By the way 600rpm in drive is low
i would check all the basics like spark plugs and check for vacuum leaks around the intake manifold.With a can of 2+2 carb cleaner while engine is running --if idle goes up or down that is were your leak is-- check egr too, Lee
The first thing to do is quit throwing parts at your car. That said, this is a very generic answer. Missing and overheating that started in a similar timeframe is quite possibly a head gasket issue. More info would be needed such as exactly how does your guage act, does it overheat quickly if you keep the rpms up? Does it smell sweet near the exhaust? Does it Smoke/steam out the exhaust when you first start it? Where any of your spark plugs white on the electrode end? Also a clogged cat. can give you this trouble. At idle everything is fine, at higher rpms the exhaust cant get out fast enought holding in the heat (overheating after a while) and causing a miss just the same as if a exhaust valve was stuck. Two things to think about.