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Author
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Topic: Misfire
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5fordguy
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Member # 6372
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posted
 
 
93 mustang 5.0, 302, edelbrock heads, e-303. 1:6 rockers, cobra intake, 24lb injectors
Car only gets driven about 1500 miles a year.
Failed smog.. First time ever failed, and it failed badly (setup hasn't been touched since 97 when it was built)
Misfire at idle and can't hold steady speed ( misfire at low speed)
Ran several batches of gas and injector cleaner
Replaced plugs,wires,cap, rotor, tfi, o2 sensors, checked all connections (tps, tfi, maf, salt and pepper, and any other under hood connection (cleaned and then dielectric gelled)), timing is at 10 degrees as it has been since engine was built cleaned maf, sea-foamed intake, checked wiring specs for tps, tfi, maf and air filer - all sensors check out in spec, no fault codes... EOEO, KOER, no codes
Could I have a bad injector?
Any thoughts or ideas are appreciated
Posts: 34 | From: concord | Registered: Jan 2006
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84SVOrick
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Member # 9039
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posted
Have you ran a compression? Need to see if one of the cyl is bad, maybe a bernt valve, bad spring, bad valve guide, head gasket?
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Bay Area Stunnaz
RIP Jeannera "FOXY302"
10/29/87-10/9/10
1984 SVO 302 HCI a basic bitch
1986 GT FOXY302 stolen and totaled R.I.P.
Posts: 1928 | From: Vallejo CA | Registered: Mar 2009
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fast 98gt
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Member # 9307
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posted
tps
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98 gt with mark 8 motor
07 p71 crown vic
02 explorer 4.0 4wd
90 gt hatch auto sold
90 f350 5.8 sold
88 lx vert 2.3 5sp...sold
Posts: 173 | From: Sacramento | Registered: Jul 2009
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5fordguy
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Member # 6372
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posted
Haven't done compression check yet,
I'll add it to the list, all the plugs looked normal upon removal, couldn't see any difference in any of them.
Tps is ok, set at .98 koeo, scoped range of butterfly movement, no gaps, smooth volt variance.
Posts: 34 | From: concord | Registered: Jan 2006
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