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Car Forum / Pontiac / Pontiac Firebird / January 2005any ideas
looks like with the fridgid weather over the past few weeks my t/a is having a hard time starting. it is carburated and has a little more compression but is there anything i can do to ease the pain? All aboard the Yankee express, next stop October..... > looks like with the fridgid weather over the past few weeks my t/a is having a > hard time starting. it is carburated and has a little more compression but is > there anything i can do to ease the pain? > All aboard the Yankee express, next stop October..... Having the same trouble here...I'm thinking it's something simple...probably a bad choke thermostat, or possibly a crack in a vac line somewhere, as I did get the valve seals done this summer, but as yet, I've not found the source of MY woes with any certainty either. I'm also running a standard 4 bbl Rochester...so yes....I feel your pain. One possibility that comes to mind is that aluminum foil heat riser...if that's got holes in it, the breather might not open up properly, or warm the air enough before it floats into the carbs...could also be the breather valve itself, but doubtful, as I seem to recall when they go, they tend to shut down after you've BEEN running a while...basically chokes it for air and it floods on ya...as you roll down the (*@#in highway! >ubject: any ideas >From: hitman0187@aol.com (Hitman0187) [quoted text clipped - 6 lines] >there anything i can do to ease the pain? >All aboard the Yankee express, next stop October..... Which carburetor? What mods? Who set it up? How was it it set up? How does it run otherwise? Define "hard starting"? Cold? Hot? Excessive cranking? etc, etc, etc. Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director '80 Carousel Red Turbo T/A, 27k orig. '79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig '84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 143k and still going.... >Which carburetor? What mods? Who set it up? How was it it set up? How does it >run otherwise? > >Define "hard starting"? Cold? Hot? Excessive cranking? etc, etc, etc. Its a 355 with a street avenger carb (holley) 770 cfm, 230/236 comp cam .490 lift 10.75-1 compression, hard starts by excessive cranking. it is set up to drive on the street i dyno tuned it at the end of summer to 404 hp 425 ft torque. Thanks. All aboard the Yankee express, next stop October..... >Subject: Re: any ideas >From: hitman0187@aol.com (Hitman0187) [quoted text clipped - 12 lines] >torque. Thanks. >All aboard the Yankee express, next stop October..... The Holley is the first problem, because they are collosal pieces of crap for the street over a Q-jet. Most Holleys "overcarb" the engine. Holley carburetors are notoriously pesky on a street application like that. How is the choke working? Does it start up fine when warm? If so, I'd look into choke issues. A tuned Q-jet would make that thing sing AND idle as it should :). Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director '80 Carousel Red Turbo T/A, 27k orig. '79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig '84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 143k and still going.... |
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