running really rough

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12-22-2009, 04:22 PM

shawty82

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Location: youngstown, ohio

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Car: 1991 camaro rs

Engine: 305

running really rough

i just put a 92 305 tbi in my 91 rs same engine as supposed to be and when i start car it sound like its missing or i dont really know just really rough and when i put it in drive and let of brake it shakes really hard like it wants to stall im not really good at this kinda stuff im new plz help me out

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12-22-2009, 04:52 PM

thirdgen88

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Car: 1995 Corvette

Engine: LT1

Transmission: 6 spd Manual

Axle/Gears: Dana 44, 3:45:1

Re: running really rough

Did you verify the firing order? 1-8-4-3-6-5-7-2 CW

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12-22-2009, 10:12 PM

jv9999

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Car: '87 IROC/'68 SS

Engine: 5.7L/350

Transmission: 700R4/Muncie 4-spd

Axle/Gears: 3.27 9 bolt / 3.31 12 bolt

Re: running really rough

Quote:

Originally Posted by thirdgen88

Did you verify the firing order? 1-8-4-3-6-5-7-2 CW

And where's your timing? Probably something simple if the engine is known good.

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12-23-2009, 09:35 AM

firebirdman

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Car: 89 Firebird Formula

Engine: 305 tbi

Transmission: 700r4

Axle/Gears: 10 bolt 3.42

Re: running really rough

Definitly sounds like a timing issue. Or your firing order like mentioned above. Just a couple other simple things to check. Air filter, make sure both Injectors are hooked up, go through the engine bay and make sure everything is plugged in.