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roybelding
roybelding, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 5419
Experience:  35 years of retail operations working on all vehicles.
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Cadillac Sedan DeVille: My 1987 Cadillac Sedan DeVille with

Customer Question

My 1987 Cadillac Sedan DeVille with 165k miles would crank but not start. I installed new ignition module, condenser, pickup coil, distributor cap and rotor, and HEI coil for cap. Set rotor at #1 plug and harmonic balancer set to TDC and installed jumper wire to a & b port for timing. Car starts, runs briefly and then seems to labor for fuel. Adusted timing forward and reverse but no improvement. Tried putting original module back in but no change. Unhooked battery to try and reset but no change. Any suggestions?
Submitted: 1 year ago.
Category: Cadillac
Expert:  roybelding replied 1 year ago.
good evening my name is ***** ***** I will assist did you check fuel pressure?? there is a port on the rail. you can rent a tester at a parts store to verify correct pressure Roy
Customer: replied 1 year ago.
Fuel pressure was never an issue. New fuel filter installed recently and no problems with fuel. Seems to be spark or timing related.
Expert:  roybelding replied 1 year ago.
with these symptoms, it still is very suspect. 87 car with an old pump. do you have spark to the plugs??? Roy
Customer: replied 1 year ago.
Originally no, but after replacing parts yes
Expert:  roybelding replied 1 year ago.
do you have a timing light to check ignition timing while cranking???
Customer: replied 1 year ago.
yes I've checked it several times
Expert:  roybelding replied 1 year ago.
and??? the reading???Roy
Customer: replied 1 year ago.
10 degrees before TDC, seems to run better at 12-14 but still stalls after running briefly
Expert:  roybelding replied 1 year ago.
ok, you are set there. back to fuel pressure.....
Customer: replied 1 year ago.
The surging seems to be more related to electrical within the distributor. Vacuum lines have been plugged. What is the correct fuel pressure?
Expert:  roybelding replied 1 year ago.
fuel pressure
Customer: replied 1 year ago.
Is the fuel pump electric or mechanical? How many are there and located where?
Expert:  roybelding replied 1 year ago.
one pump in the tank, electric Roy
Customer: replied 1 year ago.
OK thanks, ***** ***** the pressure
Expert:  roybelding replied 1 year ago.
please dont forget to rate me as it is the only way I get paid for my efforts Roy