as the title says...
i have a jdm b18c controlled by a chipped p28. it runs great most of the time, but at idle it will miss a lot, and sometimes crusing at low rpm it will miss. is this a big problem? what could cause it? thanks

 

a number of things could be the problem...like fuel, spark, bent valves, could also be the chipped p28.

 

valves are good. plugs look good. and it did this when i was running my p72 as well. fuel filter maybe?

 

Full tune up.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">Full tune up. </TD></TR></TABLE>

like what? the oil has been changed recently, plugs look perfect, just did a valve adjustment about 2 weeks ago. only thing that has not been changed(and probably never has now that i think of it) is the fuel filter. i just don't see how that would cause it to miss. btw no cels either, shouldn't it fire a code if it misfires?

 

ignition timing!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">Full tune up. </TD></TR></TABLE>

Seafoam
Oil change
Oil Filter
Spark plugs
Spark plug wires
Cap
Rotor
Fuel Filter
Ignitor (up to you really)

In that order.