Idle issues
06-07-2017, 01:03 PM
#1
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Join Date: Dec 2007
Location: Dallas, Texas
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Car: 1987 Firebird Formula
Engine: H305
Idle issues
So I recently replaced the TPS and accelerator pump in the carburetor of my 87 Formula 305.
The car, which had sat for 13 years from the previous owner, now starts up every time.
The problem I am having now is that it idles fine in park, but is rough in drive or reverse.
I have already replaced the fuel pumps, spark plugs/rotor/cap.
Any suggestions on what to check are greatly appreciated!
The car, which had sat for 13 years from the previous owner, now starts up every time.
The problem I am having now is that it idles fine in park, but is rough in drive or reverse.
I have already replaced the fuel pumps, spark plugs/rotor/cap.
Any suggestions on what to check are greatly appreciated!
06-17-2017, 09:04 PM
#2
Re: Idle issues
Has new clean fuel and filter correct? Check for any vacuum leaks, including intake gaskets. Check and test all before replacing any parts. Check vacuum breaks on carb., for leaks and adjustments. Was there trash in fuel bowl when air horn was off?
Joe
Joe
06-20-2017, 02:46 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Re: Idle issues
I'd advise a thorough disassembly, inspection, cleaning, inspection, and rebuild. A carb that has sat around that long rarely just works again when only given minor attention.
