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Author
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Topic: Testing Injectors??
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silverLX
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Member # 3207
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posted
 
 
My friends car has been missing for hte past couple days, and I took a look at it today...it had a foul plug(#7), so I replaced all the plugs...ran better but still missed. Next I took the plug wires off my car, didnt help at all. Ran a cylinder balance test, got only a couple somg codes, and then its saying #7 and #8 cylinders are weak. I am going to adjust the rockers first, but if that doesnt fix it, could it be a bad injector? If so, how do I test it?
Thanks
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88LX hatch 410w
88LX vert gears, exhaust
95GT H/C/I
Posts: 1613 | From: Sonoma County | Registered: Aug 2003
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CDT
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Member # 5004
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posted
you can swap in to known good injectors, only other way to really test them is send them out.
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Custom Dyno Tuning
510.331.0608
Home of Flat Fee Tuning For All Cars, Trucks and SUV's, EFI & Carb, SCT, AFR, Dynatech, STS Turbos, N2O Refills
Posts: 1053 | From: Hayward | Registered: Nov 2004
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silverLX
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Member # 3207
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posted
Well, I adjusted the rockers and its still the same thing. Also, all the spark plugs had a litte rust on them ![[Confused]](confused.gif) Never seen that before, I was thinking it was maybe a head gasket problem? Any other ideas?
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88LX hatch 410w
88LX vert gears, exhaust
95GT H/C/I
Posts: 1613 | From: Sonoma County | Registered: Aug 2003
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silverLX
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Member # 3207
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posted
My friend who owns the car just remembered that it backfired a couple times earlier this week, a couple days befroe it started to miss...
I also noticed, that when he turns the key off, there exhaust makes a hissing sound for a second...
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88LX hatch 410w
88LX vert gears, exhaust
95GT H/C/I
Posts: 1613 | From: Sonoma County | Registered: Aug 2003
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nor*cal93ssp
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Member # 3884
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posted
im sure you can ohm check the injectors. not sure what the exact specs are but you can sure check the resistance o w/a multimeter and compare with all others. they should all be within the same range. or simply remove the fuel rail w/injectors inplace and turn the key on and watch how 'em spray, but even then this still wont be accurate as to how good each injectors are.
Posts: 68 | From: 650 | Registered: Dec 2003
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Fostang
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Member # 3752
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posted
I don't think I'd want high pressure fuel around me with an open ignition.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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silverLX
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Member # 3207
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posted
quote:
Originally posted by Fostang:
I don't think I'd want high pressure fuel around me with an open ignition.
me either.
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88LX hatch 410w
88LX vert gears, exhaust
95GT H/C/I
Posts: 1613 | From: Sonoma County | Registered: Aug 2003
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forced331
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Member # 1270
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posted
Did you ever figure out what was wrong?
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1992 Ford Mustang LX (Original Owner)"Titanium Frost" 331stroker S-Trim, 5spd
2014 Ford Mustang GT- daily driver
Posts: 1154 | From: Sonoma County | Registered: May 2002
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silverLX
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Member # 3207
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posted
I think its a blown head gasket. I posted the question on Corral and got a few people saying either head gasket or intake gasket judging by the rusty plugs.
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88LX hatch 410w
88LX vert gears, exhaust
95GT H/C/I
Posts: 1613 | From: Sonoma County | Registered: Aug 2003
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