missing after a hard run

88fivepointoh · 06-23-2003, 10:29 PM

well i have managed to smoke a new corvette since i got my problems resolved but the only thing I have now is after last nite I raced a 300zx and smoked his @ss hard it seems to have developed a hesitation and miss. I drove my car around tonight for a while and it seems to mostly clear up after i did alittle driving. could my plugs be at fault? I am using AC delco rapid fire #1's.. I like the electrodes on them. they are similar in design of the denso irridiums. Could I have heated them up a bit and glazed them? My engine temp did go up about 2 lines from normal after I ran it hard.

rbohm · 06-23-2003, 10:38 PM

probably a combination of things, like if the plugs have some miles on them, and when running hard the ecu sets the mixture to about 13.5:1so you might have had some unburnt fuel left to clear out. also an injector may be starting to malfunction.

88fivepointoh · 06-24-2003, 07:53 AM

The plugs are new and have under a 1000 miles on them. the injectors are #24 lbs FMS that I put in last year. I did have a fuel tank problem where the inside of teh tank rusted out and killed my pump and clogged up 3 filters with sediment. could that have gone past the filter and ***ked up my injectors? I get very slight bucking sometimes when gear changing or slowing down around corners.

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06-23-2003, 10:29 PM	#1
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	missing after a hard run well i have managed to smoke a new corvette since i got my problems resolved but the only thing I have now is after last nite I raced a 300zx and smoked his @ss hard it seems to have developed a hesitation and miss. I drove my car around tonight for a while and it seems to mostly clear up after i did alittle driving. could my plugs be at fault? I am using AC delco rapid fire #1's.. I like the electrodes on them. they are similar in design of the denso irridiums. Could I have heated them up a bit and glazed them? My engine temp did go up about 2 lines from normal after I ran it hard.

06-23-2003, 10:38 PM	#2
rbohm Registered Member Join Date: Jul 2002 Location: tucson,az/luray,va Posts: 243	probably a combination of things, like if the plugs have some miles on them, and when running hard the ecu sets the mixture to about 13.5:1so you might have had some unburnt fuel left to clear out. also an injector may be starting to malfunction. __________________ define irony: a bunch of idiots on a plane, dancing to a song made famous, by a band who died in a plane crash. fordsix.com admin

06-24-2003, 07:53 AM	#3
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	The plugs are new and have under a 1000 miles on them. the injectors are #24 lbs FMS that I put in last year. I did have a fuel tank problem where the inside of teh tank rusted out and killed my pump and clogged up 3 filters with sediment. could that have gone past the filter and ***ked up my injectors? I get very slight bucking sometimes when gear changing or slowing down around corners.