I having a problem with rough running on my 1985 FJ60. It has been desmogged according to JimC's instructions. Ran well for quite a while, but now having trouble with rough running. Compression checks out okay with around 150psi on each cylinder. Carb was rebuilt by JimC but was quite a while ago, maybe 10-12 years ago, although not alot of mileage in the interim. I attached a smoke machine to the carb, thinking ive got a vacuum leak, and ive got smoke pouring out the accellerator pump hole. Accellerator pump squirts fuel when the throttle is operated. Little boot on accellerator pump has seen better days and maybe this is my problem. Additionally, ive got smoke pouring out the High side vacuum advance on the distributor, which probably means the vacuum advance diaphragm is shot and creating another vacuum leak. Anybody know if the accellerator pump should be sealed? or any other thoughts? thanks.
