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568 Posts
Ok here's the deal, me and my cousin swapped a vr6 dizzy out of his old coupe into the new coupe. In the old coupe it ran fine besides our vaccum leak. But ounce we put it in the new coupe it starts up fine at first and runs smoothly for about 4 to 8 sec ,i can rev it fine no choke ups. After those first few seconds it starts to run kinda ruff, you can hear it stuttering and it's harder for it rev up. It does this for about 4 to 8 sec aswe'll like a cycle of smooth and ruff. and there's nice a mount of smoke coming out the exhaust and i can smell fuel. All i did was switch out the engine from car to car. The only thing that comes to mind is the fuel filter perhaps/ or fuel pump?.
.I don't understand it ran in the other coupe fine. BTW car is 1989 jetta coupe. Thanks

