could spark plugs and distributer be my problem?

stanger9219 · 10-16-2003, 12:05 PM

I just realized that my car is only running on 6 cylinders because of a couple of bad spark plugs. But my car has been having so many other problems. For one the idle is really shaky and the car dies when it is cold. The motor backfires in the intake. And the surging has been getting worse and worse. I got diagnostics done and he said it was the IAC and the EGR valve, but i replaced them and no change. Thanks for any help.

Coolbreeze · 10-16-2003, 02:47 PM

Check for vacum leaks....

QuantumMotorsports · 10-17-2003, 01:56 PM

Dude, change your plugs,they're like a dollar apiece and it's easy. Then see if you still have the problems.

stanger9219 · 10-18-2003, 11:41 AM

i changed the plugs, distributor cap, plug wires, ignition coil, and te fuel filter and it helped a lot but the car is still occassionally doing it.

Stang_ROTY · 10-20-2003, 11:30 AM

Check vacuum as noted above....a vac test can't hurt either

tocchinero · 10-21-2003, 01:11 PM

Yea check to see if there is any vaccum leaks. Hook up a vaccum gauge to a main vaccum line behind the throttle plate and start the car. A normal reading should around a steady 17 or 18. If you have a vaccum leak it will be lower and probably fluctuating.

mustangcobra_91 · 10-23-2003, 03:30 PM

still sounds like a timing issue to me.

10-16-2003, 12:05 PM	#1
stanger9219 Registered Member Join Date: Sep 2003 Location: st. louis, MO Posts: 197	could spark plugs and distributer be my problem? I just realized that my car is only running on 6 cylinders because of a couple of bad spark plugs. But my car has been having so many other problems. For one the idle is really shaky and the car dies when it is cold. The motor backfires in the intake. And the surging has been getting worse and worse. I got diagnostics done and he said it was the IAC and the EGR valve, but i replaced them and no change. Thanks for any help. __________________ 98 Cobra, CAI, Flowmasters, o/r h-pipe. 4.10s, Hurst shifter.

10-16-2003, 02:47 PM	#2
Coolbreeze Registered Member Join Date: Oct 2000 Location: ~Columbus~GA~31909~ Posts: 156	Check for vacum leaks.... __________________ Mike Blown~AOD'ed~331~ T-top~ 86GT Check out car on my page here ------ > ~~My 86GT T-top ~~

10-17-2003, 01:56 PM	#3
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	Dude, change your plugs,they're like a dollar apiece and it's easy. Then see if you still have the problems. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites

10-18-2003, 11:41 AM	#4
stanger9219 Registered Member Join Date: Sep 2003 Location: st. louis, MO Posts: 197	i changed the plugs, distributor cap, plug wires, ignition coil, and te fuel filter and it helped a lot but the car is still occassionally doing it. __________________ 98 Cobra, CAI, Flowmasters, o/r h-pipe. 4.10s, Hurst shifter.

10-20-2003, 11:30 AM	#5
Stang_ROTY Registered Member Join Date: Feb 2001 Location: Berkshire County - Massachusetts Posts: 735	Check vacuum as noted above....a vac test can't hurt either __________________ Red 1993 GT Street Machine Best E.T. - 12.41/Best MPH = 108 Engine is a 1969 351 block w/393 stroker kit. Dynamic Roller Myte C4, 8 pt cage. Edlebrock Performer heads and Victor Jr. EFI, FRPP 30lb injectors & Cartech fuel system. MSD ignition. Sothside Machine bars & Sub-frames, adj. upper's, 3.73's, Koni rear shocks, much more

10-21-2003, 01:11 PM	#6
tocchinero Registered Member Join Date: Oct 2003 Location: Morris County, NJ Posts: 14	vaccum check Yea check to see if there is any vaccum leaks. Hook up a vaccum gauge to a main vaccum line behind the throttle plate and start the car. A normal reading should around a steady 17 or 18. If you have a vaccum leak it will be lower and probably fluctuating.

10-23-2003, 03:30 PM	#7
mustangcobra_91 Registered Member Join Date: Feb 2001 Location: amarillo tx united states Posts: 10	still sounds like a timing issue to me.

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