Ignition timing and curb idle

TIFFWHATEVA

MEMBER
MERCURY TOPAZ

Ok so I have a 86 mercury topaz and its having problems. We recently replaced all four pistons, and when we put everything back together its having problems. It will start but we cant get it to time corretly so if you know the correct timing and curb idle for my car will you please tell me.

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

What do you have 1.9 2.3 or 2.5

Is it Carb/MPFI/CFI?

Did you aligned the Cam/Crank sprockets as illustrated in the book and piston no.1 on its compression stroke. Inspect/verify.

Could be very well be in the exhaust stroke or its way out of time.

1.9L

Ignition Timing 10BTDC Curb 750rpm
To adjust timing disconnect 2-wire connector at ICM then install jumper wire to yellow and black wire-now go aim the gun.

BTW all this data should be underneath the hood lable VECI and its instructions to follow.