1987 Mercury Marquis Repair Question
Topics covered: Engine, Spark, Black smoke.
Mileage: No information provided.
Mileage: No information provided.
Asked on June 22, 2010
1987 Mercury Marquis no engine light
Engine Performance problem
1987 Mercury Marquis V8 Two Wheel Drive Automatic 63000 miles
bought this car off an old man has 63000 original miles tune ups ,oil changes all been kept up good it's in excellent condition. as i was driving the other day it began to miss, a dead solid miss, no engine light came on as it got warm it got worst now it wont run at all tries to start but wont. and the couple of chugs it dose when you try to start it leaves black smoke with a gas smell behind the car
1987 Mercury Marquis V8 Two Wheel Drive Automatic 63000 miles
bought this car off an old man has 63000 original miles tune ups ,oil changes all been kept up good it's in excellent condition. as i was driving the other day it began to miss, a dead solid miss, no engine light came on as it got warm it got worst now it wont run at all tries to start but wont. and the couple of chugs it dose when you try to start it leaves black smoke with a gas smell behind the car
Asked by burt39Answer
Replied on June 22, 2010
Lets do below for a start to determine if its fuel or spark related issue and get back with some results
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it
