driving or at idle, i hear like slight popping sound coming out from the exhaust like backfire i assume, but its minimal sound, you can barely hear it but its there. Its like it has a pattern to it. What can be the cause of this? hope its nothing major. please help!? thanks

 

check spark plugs, and do you have a short ram intake? or cold air? or stock ?

 

running a bit on the rich side and yah short ram too, o2 sensor looks fine. what can solve this now. thanks

 

You might want to get new plugs and make sure they're properly gapped.

I'm a bit on the rich side (turbo D) and I get occasional misfires at idle and super-light throttle.

 

now on idle its starts to pop more and i can feel it, i took to vtec range once and i heard popping like erratic pattern but not too loud, then later took it to vtec range didint happen, but it does pop at idle i can hear and feel it, air filter is dirty for sure havent or never changed it. ill buy new spark plugs asap. Anything else to add???? thanks!!

 

New plug wires and check your base timing.

You said you're running rich, why's that?

 

plug wires and spark plugs? and base timing dont know what that is, all this jus happened yesterday wasnt like this before, its a built lsvtec low comp pistons built valve train and block thats y im running rich built for turbo to support up to 14lbs i have no fuel pressure regulator yet. soon though and the air filter was never changed so its dirty for sure. help?


Modified by V8-eater at 10:36 AM 4/18/2006


Modified by V8-eater at 11:06 AM 4/18/2006

 

Base timing is when you break out the timing light and you see where the little timing mark lines up on the crank and little V thing on the timing belt cover.

 

icic wut am i suppose to look for in the base timing im not too mechanical lol. but should replace spark plugs and plug wires or which one, and yah like i sed air filter dirty never changed. and no fuel pressure regulator yet.??

 

Buy new spark plugs and new spark plug wires (OEM wires are generally the best.) and I'd replace that air filter.

Then check your base timing (Using a timing light you want the little mark to be between the Vs on the timing belt cover.

 

thanks!! will do!! how much u think the wires should run for?

 

I have no clue. It's something I've been meaning to replace on my car for awhile. I just hope it all holds together for another couple of months so I can put a completely new motor in.

Why is your car running rich? Running rich is probably the main reason for the mis-fire.

 

You got an intake.... How about header, muffler no cat?? What other mods?

 

no fuel pressure regulator, colorless smoke, just fumes u can smell of running rich.

 

That's wierd. I don't know why it's running rich. It sounds like you have a pretty stock car. It would make me think fouled O2 sensor, but that's something too expensive to replace if you're just trouble shooting.

I'd start with the plugs, wires, and check your timing.

 

full exhaust no cat, short ram, stock b18b header, built block low comp for boost.

 

oh its built lsvtec in eg6 hatch, built internals & valvetrain built.

 

Prolly 'cause ur running rich, my probe runs rich and I have the same thing..

 

When i step on it and let off the gas i get a pop once and a while it makes me think of the kernels that i once used to slave over in the microwave

 

check your timing. im having same problem. im running rich, plugs are old and i know timing is off. im screwed


edit:: my 1000th post. hoo rah!!!!

 

its been like that less noticeable, but it was there, but jus last nite thats wen it started to do it more. and wen i took it to vtec range today in the morning after it has warmed up, it was popping in vtec range, then kept driving normal then went to vtec then it went away, since then it doesnt pop in vtec but pops nonetheless idle or cruising no smoke or any sort.

 

because you're running rich you could even be dieseling a bit, if its hot enough and there's unburned gas that builds it ignites itself... nothing to worry about, just finish your turbo build and i think you'll be fine. get a FPR asap

 

thanks!! dieseling?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by V8-eater &raquo;</TD></TR><TR><TD CLASS="quote">thanks!! dieseling?</TD></TR></TABLE>

It's predetnating/unburnt fuel left in the cylinder is combusting without the spark plug firing.

 

i see, well you know, i got new spark plugs, and got a new air filter today, the air filter was **** and damn those spark plugs were corroded, one of three were only igniting, cuz one of them had the tip touching each other with corroded elements, and now **** is running smooth as expletive thanks guys!!! appreciate it big time!!