Runs like crap

94snake · 03-04-2003, 01:28 PM

i have a 94 cobra and the motor doesnt run smooth at all. the exhasut sounds totally different and the rpm's seem to bounce around while cruising. i think it could be the timing.what else could it be? please help

Nixon1 · 03-04-2003, 03:03 PM

You firing on all cylinders??

94snake · 03-04-2003, 04:42 PM

how can i check?

66StangGuy · 03-04-2003, 05:40 PM

pull your spark plugs and see what they look like.

Nixon1 · 03-04-2003, 08:20 PM

Check your distributor cap and rotor for corrosion or carbon tracking, or physically broken things.. Make sure all of your plugwires are routed and connected right, and aren't physically damaged. Make sure your plugs are in decent shape.

Also...this was true on my old V6 and I assume it's true on most any EFI....
If you're not firing on any cylinder ,you should hear TICKING coming from the engine..generally sounds in the valve-cover region. And the car will sound "funny" from the exhaust, but still kinda normal maybe UNTIL you rev it LIGHTLY and it backfires and sounds shitty. Caution...if you're running on down cylinders, revving it IS dangerous...the unburnt air and fuel mixture leaving your exhaust pipes COULD be ignited by a backfire, causing an explosion..NOT GOOD!!!

94snake · 03-04-2003, 11:41 PM

i will pull the plugs and check the wiring in the morning. hopefully ill find something simple.

03-04-2003, 01:28 PM	#1
94snake Registered Member Join Date: Nov 2002 Location: Panama City Fl. Posts: 152	Runs like crap i have a 94 cobra and the motor doesnt run smooth at all. the exhasut sounds totally different and the rpm's seem to bounce around while cruising. i think it could be the timing.what else could it be? please help

03-04-2003, 03:03 PM	#2
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	You firing on all cylinders?? __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

03-04-2003, 05:40 PM	#4
66StangGuy Registered Member Join Date: Feb 2002 Location: Diamond Bar Posts: 258	pull your spark plugs and see what they look like. __________________ 66 mustang-292-Holley 4160-World Castings Windsor Sr.-Hooker super comp headers-MSD box & Coil.3.55 gears. B&M Z-Gate-Black leather racing seats with 4pt harnes.

03-04-2003, 08:20 PM	#5
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Check your distributor cap and rotor for corrosion or carbon tracking, or physically broken things.. Make sure all of your plugwires are routed and connected right, and aren't physically damaged. Make sure your plugs are in decent shape. Also...this was true on my old V6 and I assume it's true on most any EFI.... If you're not firing on any cylinder ,you should hear TICKING coming from the engine..generally sounds in the valve-cover region. And the car will sound "funny" from the exhaust, but still kinda normal maybe UNTIL you rev it LIGHTLY and it backfires and sounds shitty. Caution...if you're running on down cylinders, revving it IS dangerous...the unburnt air and fuel mixture leaving your exhaust pipes COULD be ignited by a backfire, causing an explosion..NOT GOOD!!! __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

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03-04-2003, 04:42 PM	#3
94snake Registered Member Join Date: Nov 2002 Location: Panama City Fl. Posts: 152	how can i check?

03-04-2003, 11:41 PM	#6
94snake Registered Member Join Date: Nov 2002 Location: Panama City Fl. Posts: 152	i will pull the plugs and check the wiring in the morning. hopefully ill find something simple.