Exhaust Skip/Rough Idle

ndburli

ndburli

New member
Hey guys...as usual need a little help. I noticed this morning when driving the Sy there is a small skip in the exhaust. I currently have a cat (reads AC Made in USA-not sure if stock), and a Borla muffler/exhaust. The skip can be heard at the end of the muffler. It also smells as though its burning rich with a slight rough idle when then engine gets hot . Is it possible this is the catalytic converter be stopped up? I pulled the exhaust and looked into the back of the catalytic converter and everything looks in tact. Any ideas would be helpful.

Thanks,
Nate
 
ndburli

ndburli

New member
Re: Exhaust Skip/Rough Idle

plugs, dist, wires all replaced recently. I guess I could pull the plugs to see if there is an issue there.
 
atkonkler

atkonkler

Is this your bush?
Re: Exhaust Skip/Rough Idle

Check porcelain on plugs for hairline cracks that might have came during transport of the plugs and careless employees at parts store just tossing them around
 
ndburli

ndburli

New member
Re: Exhaust Skip/Rough Idle

Alright...checked the spark plugs and wires (boot at the plug and at the distributor). All look okay. I went ahead and pulled the exhaust and looked into the cat....should you be able to see thru the catalytic converter? I am assuming the "white material" in the catalytic converter is normal? Any other ideas? I am thinking either replacing the cat with a high flow cat or potentially getting a down pipe where I can eliminate the cat altogether. Thoughts?
 
Neelsonwheels

Neelsonwheels

Donating Member
Re: Exhaust Skip/Rough Idle

Check the inside the Dizzy. Make sure it is not corroded. Try a new igniton module also. I am assuming you have a stock Dizzy with the module at the bottom of the distributor.
Good luck keep us posted.

Neels
 
ndburli

ndburli

New member
Re: Exhaust Skip/Rough Idle

I have already replaced distributor and ignition module. It is just a small skip...definitely there though..drives me crazy! As for the rich smell....Obviously fuel is not being completely consumed in the chamber. What would cause this...is it possible the timing is off some? I think regardless I am going to replace the catalytic converter. It is the original converter. Not to mention I think I want a little more rumble so I will likely get rid of the Borla exhaust system I currently have on the truck. I think I've spent more time under the hood than actually driving this truck...haha! Thats the price you pay for owning a Sy/Ty I guess!
 
asmo

asmo

Sy #2918
Re: Exhaust Skip/Rough Idle

I would check the fuel pressure, my regulator was bad and my truck did this same stuff, smelled rich, rough idle,etc. my fuel pressure was super high like 120psi.
 
ndburli

ndburli

New member
Re: Exhaust Skip/Rough Idle

I never thought about that actually. I have a brand new Walbro pump I need to install. Excuse my ignorance but is the regulator located with the pump or are they one in the same?
 
asmo

asmo

Sy #2918
Re: Exhaust Skip/Rough Idle

the regulators on the fuel rail behind the intercooler, there is a schrader valve on the driver side rail you can screw a gauge on, to check it.
 
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