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Re: '69 C10 327 SBC Off Idle Stumble / Misfire Help - I feel like I've tried EVERYTHI
Quote:
Originally Posted by 72c10deluxe
Hello, A few years ago I had a 67 Corvette roadster with the 327-350hp
engine. I also had an off-idle stumble that I was able to eventually resolve.
I played with the Holley carb and eliminated fuel delivery issues. I installed a set of Autolite #295 spark plugs and the car responded well with those plugs.
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Thanks for the reply, I plan to work on the carb (check floats, look for debris / trash, check filters, adjust idle mixture screws, adjust choke, check accelerator pump, etc.) this weekend and reduce the timing advance just a few degrees. I want to see what that does then move on to other suggestions. It "feels" like a fuel delivery problem and I had not checked the floats upon delivery / installation. It makes sense to rule that out first.
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1969 C10 Stepside (PERCY - tribute to CDE)
1996 Chevrolet Tahoe 2-door / 2WD LS5.3/4A (ROBYN)
1998 GMC SLE Regular Cab Short Bed Fleetside 4.3/4A (LUCY) (driver)
2000 JEEP Cherokee Sport XJ 4x4 4.0/4A (RUBY, son #2)
2013 VW GTI Driver's Edition 1.8T/6A (GRAU GEIST, son #1)
2016 BMW X5 xDrive50i MSport 4.4L N63/8A (SCHNEEWITTCHEN)
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