Questions & Answers for: Honda rough start

rough running, back firing, hard start hard start, back firing, sudden onset problem, valves? coil? replaced sparkplug but same. Classic valve train issues. Sounds like the valves are tight. One thing

...rough" at? and normally? ..finally, when it is warm, and you shut it off and start it back up a short time later (while it is still a bit warm) does it run rough as well? so, if it starts/runs fine ...

...5L quit running properly. Starts, runs for a few seconds just fine then stumbles and starts running rough, check engine light comes on then it stalls. Started as an intermittent problem. I have ruled ...

rough idle. stalling,hard starting rough idle. stalling ,hard starting It is probably your IAC valve.

...rough when cold then no longer started Engine needs two things spark and fuel to run. both will cause problem your having. easiest thing to try is starting fluid spray into air intake to motor by ...

...rough in reverse?if notopen hood start engineLeft foot on brake (hard)start enginewatch engine as you select drivestill holding brake with left foot / throttle gas with right footdoes engine ...

Rough idle right after starting Immediately after starting, the engine idles rough. It lasts for about 10 seconds or until I press down on the gas peddle. After that, the car runs fine: lots of power,

...start but ran rough..... found I had a vacuum leak from the map sensor to the throttle body... blocked the area on the throttle body and rerouted the vacuum line into my fuel pressure regulator... ...

...rough after warming up The cold start valve could need replacing. Also when cold, condensate gets on the wiring causing it to run rough until things warm up. Try covering it up at night. Check your ...

start run rough. If I stop for a bit and keep it idling it clear up. Once I head down the road again for a mile or two it runs rough again. carb needs ajust in the jet area--let a pro du this cause if