1996 accord idling rough please help!

[marsul83]

I have a 1996 accord V6 2.7 liter
im having problem when i start my car it idles very rough as if its running out of gas.
even when i accelarate it if feels like its going to die out!
it has only 109 000 km this problem only happeneds when the car sits for more then 2 days and only last for 5 mins when driving then goes away and car drive perfect!
its wierd i had brought it to a mechanic but he said nothing was wrong because at the time car is running good.
i need my timming done its never been done before.. could that be the problem?
or is it my feul pump or injectors?
Please help i wanna fix this problem before it gets worse..
thanks!

[007COUPE]

I also have the 96 lx. I bought my car with 94k on it, it now has 219k. I was told when I bought the car that the timing belt was just replaced. I didnt change the timing until 217k (Would not recomend) I think they recomend changing it at about 90k. When I got it done the Tech told me that balancing belt was just sitting inside the belt the plastic cover. He replaced it for me and told me that the engine would run a lot smoother, he wasnt kiding. usually you could feel the engine vibrating through the steering wheel, now its smooth. Check the spark plugs and wires and distributer.

[jeffcoslacker]

Originally Posted by marsul83

I have a 1996 accord V6 2.7 liter
im having problem when i start my car it idles very rough as if its running out of gas.
even when i accelarate it if feels like its going to die out!
it has only 109 000 km this problem only happeneds when the car sits for more then 2 days and only last for 5 mins when driving then goes away and car drive perfect!
its wierd i had brought it to a mechanic but he said nothing was wrong because at the time car is running good.
i need my timming done its never been done before.. could that be the problem?
or is it my feul pump or injectors?
Please help i wanna fix this problem before it gets worse..
thanks!

Timing is not an issue here, and doesn't nned periodic setting...do you mean your timig belt? Still not your problem, but you may be near the recommended interval for replacement. Check Honda's reccomendation...if they don't have one, 60,000 miles is the standard for timing belts....(sorry, I can't do the miles/km conversion in my head yet this morning)

If I had to take a wild guess, I'd think maybe something like your fuel pressure regulator was allowing pressure to bleed out of the fuel rail when the car sits for an extended time, then it starts up with a poorly charged rail and the injectors spitting air until the pump catches up...what happens if you turn the key to the "on" (not start) position and let it sit for maybe 15 seconds or so before starting the motor?

Give it a try, that would allow the fuel pump to re-pressurize the rail and purge any air from the injectors...if the car then starts and runs fine each time you try this, I may be on the right track...also the fuel pump should come on and run just long enough to assure the system is pressurized whenever you first turn the key on...you can hear it as a faint hum from the rear of the car for a second or two after the key is turned to "on"...there may be a cold start relay or something like that not working right too....

Hondas aren't my main thing, so I don't know if there might be something very common that causes this on your model...someone here may have better ideas...Toyota uses (or used) a cold start injector in the intake to richen the cold mixture and make starting and warming up run better...they'd act like this when the timer or relay for that injector went out...maybe there's something similar here? I dunno...

I bet a reading with a fuel pressure gauge after letting the car sit for a couple of days would tell you *(or your mechanic)* something useful...that's the place to start, IMO.