Question about Isuzu Rodeo
I've got a 2004 Isuzu Rodeo 3.5ltr 4X4 that had a misfire problem on cylinder 4 (check engine light was on) last October and brought it in and was said to be a the fuel injector. It was fixed under warrenty. I still noticed a hesitation during acceleration, but of course the mechanic didn't notice a problem. Now that I am using the AC I notice a hesitation/misfire more frequently. I have switched to premium gas and injector cleaner every 3000mi. (still hesitates/misfires) CHK engine light is not coming on this time. Gas mileage is bad and was never fixed from replacing injector. Any ideas what next to check?
The upper intake gaskets may be leaking. They are made of plastic and metal and will leak air. Do not remove the cover on very top of manifold when changing.
Posted on Jul 24, 2009
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Posted on Jan 02, 2017
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If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
I know for your car, the ps701 is useful.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
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