Any Ideas On What's Going On?

Bricksack · December 30th, 2011, 11:16 AM

i have a 96 cobra. Every time i go to start the car after its been sitting for a couple hours. its starts rough. Low RPM's and acting like its not on all cylinders. bout 20-30 seconds later its idles and runs perfectly normal. during that time when i am pushing the gas a little the exhaust is popping like its under water.
im thinking its my plugs or wires. Just making sure its not anything else.
any ideas?!

ReverendDexter · December 30th, 2011, 11:24 AM

I don't think plugs or wires are your culprit. If that was the case, it would run like crap all the time, or it would run fine cold and get worse the warmer the engine got.

When's the last time you seafoamed the car? B-ports have a dry port, and the *only* way to clean it without disassembly is to use Seafoam. With my '98 Cobra, I would just seafoam it every other oil change. FWIW, if you haven't done it, don't waste your time putting it in the gas, and only put it in the crankcase if you're going to change your oil in the next 30 minutes of runtime.

Bricksack · December 30th, 2011, 11:30 AM

i haven't sea foamed it in quite a while so i'm gonna try that see what happens. hopefully that will work i really dont wanna tear apart the motor just yet. its my daily driver.

im decently new to the whole forum deal whats FWIW?

ReverendDexter · December 30th, 2011, 11:32 AM

FWIW - For what it's worth

Bricksack · December 30th, 2011, 11:34 AM

ah gotcha. yeah i dont ever put seafoam in the gas or crank . always through the vacum line. ive alway been told thats the best way to deal with it

DickH · December 30th, 2011, 02:37 PM

fuel delivery issues? I know after doing a pprv delete on my car, I would have to wait for the pressure to build back up or else the car would die or sound rough. I know your fuel system is different but its still something to check.

December 30th, 2011, 11:16 AM	#1
Bricksack Newbie 1996 Mustang Cobra SVT 14.00 Join Date: Oct 2011 Location: Jacksonville Fl. Posts: 25 iTrader: 0 reviews	Any Ideas On What's Going On? i have a 96 cobra. Every time i go to start the car after its been sitting for a couple hours. its starts rough. Low RPM's and acting like its not on all cylinders. bout 20-30 seconds later its idles and runs perfectly normal. during that time when i am pushing the gas a little the exhaust is popping like its under water. im thinking its my plugs or wires. Just making sure its not anything else. any ideas?!

December 30th, 2011, 11:24 AM	#2
ReverendDexter Priest of the Car Gods Clapped-out '90 GT 'vert ~5.5 seconds off TTOD :( Join Date: Jan 2007 Location: Rohnert Park, CA Posts: 13,808 iTrader: 0 reviews	I don't think plugs or wires are your culprit. If that was the case, it would run like crap all the time, or it would run fine cold and get worse the warmer the engine got. When's the last time you seafoamed the car? B-ports have a dry port, and the only way to clean it without disassembly is to use Seafoam. With my '98 Cobra, I would just seafoam it every other oil change. FWIW, if you haven't done it, don't waste your time putting it in the gas, and only put it in the crankcase if you're going to change your oil in the next 30 minutes of runtime. __________________ O o /¯/______________________ \|BLAAAAAAAAAAAAAAAAAAAAAAAAARGH!!! \_\

December 30th, 2011, 11:32 AM	#4
ReverendDexter Priest of the Car Gods Clapped-out '90 GT 'vert ~5.5 seconds off TTOD :( Join Date: Jan 2007 Location: Rohnert Park, CA Posts: 13,808 iTrader: 0 reviews	FWIW - For what it's worth __________________ O o /¯/______________________ \|BLAAAAAAAAAAAAAAAAAAAAAAAAARGH!!! \_\

December 30th, 2011, 02:37 PM	#6
DickH MM Fanatic 2003 gt 5.4 32v on the way Join Date: May 2007 Location: Omaha Posts: 4,189 iTrader: 2 reviews	fuel delivery issues? I know after doing a pprv delete on my car, I would have to wait for the pressure to build back up or else the car would die or sound rough. I know your fuel system is different but its still something to check. __________________ 2003 Mustang gt - usual mods - slowly working on 5.4 swap 2004 srt4 - Stock DD/winter beater Click here for your tuning needs Before asking a gearing related question click THIS link and enjoy all your saved time.

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December 30th, 2011, 11:30 AM	#3
Bricksack Newbie 1996 Mustang Cobra SVT 14.00 Join Date: Oct 2011 Location: Jacksonville Fl. Posts: 25 iTrader: 0 reviews	i haven't sea foamed it in quite a while so i'm gonna try that see what happens. hopefully that will work i really dont wanna tear apart the motor just yet. its my daily driver. im decently new to the whole forum deal whats FWIW?

December 30th, 2011, 11:34 AM	#5
Bricksack Newbie 1996 Mustang Cobra SVT 14.00 Join Date: Oct 2011 Location: Jacksonville Fl. Posts: 25 iTrader: 0 reviews	ah gotcha. yeah i dont ever put seafoam in the gas or crank . always through the vacum line. ive alway been told thats the best way to deal with it

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