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Lexus IS 300 2001. My vehicle overheated and warped the cylinder head without blowing the gasket. The head was replaced and everything reassembled, but now there is a slight knocking noise and a rough idle what could cause this? Do you think the timing is off?
Should I put a fuel system cleaning agent in my Chrysler 200 gas tank? An auto repair shop was up selling me with the suggestion that I needed a fuel induction Service. Mileage is 110,200, I don't have any rough idle, the vehicle doesn't have the speediest acceleration being an older car but there's no noticeable hesitation. No back fires and no engine ...
this car has a rough idle and check engine light on. the code that comes up is an emissions code. I clear it and it seams to come on at about 25 miles. I have replaced emission valves. timing belt. majority of sensors in and around this car. any help will be appreciated.

Hi, I have a 1998 Honda CRV, 2.0L L4, with 137K miles that is throwing several CEL codes: P0301 (cylinder 1 misfire), P0302 (cylinder 2 misfire), P0304 (cylinder 4 misfire), P0300 (multiple cylinder misfire), and P1399 (manufacture control ignition system or undefined code). Recently the sparkplugs were changed, the distributor cap and rotor were ...

How can i tell if timing is off? I just put new chains, tentioners, gjides and gears in. Im wondering if im off a tooth. Limited power...4000rpm..max Barely stays running at idle and sometimes dies. Codes are: p0300,p0302,p0304,p0306, p2119,p0449 ive test the vent valve....it works! Ive swapped coils of 5 and 6....didnt make difference. When i hold rpms ...


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