Mercruiser MCM 5.7L V8/350 Thunderbolt IV Will not start after Tune-Up

[flightrn]

Hello all, I have a 1993 20ft Larson 200SEI with a Mercruiser MCM 5.7L V8/350 Thunderbolt IV and Alpha I stern drive. I decided to do a tune-up; oil change/Filter, Gas filter, plugs, wires, rotor and cap. Before all this my boat started every shoot, after the tune-up it started once, idled for several minutes then died It turns over just will not start, battery is good, safety switch is good, I have no spark at the plugs and no spark at the distributor and coil. I checked the fuses all is good....I'm lost and frustated...thank you for any help..

 

[Bt Doctur]

Re: Mercruiser MCM 5.7L V8/350 Thunderbolt IV Will not start after Tune-Up

what type of ignition, fuel pump, carb`d, injected?

 

[90stingray]

Re: Mercruiser MCM 5.7L V8/350 Thunderbolt IV Will not start after Tune-Up

Check the coil wire connection at coil and dist. make sure it's engaged fully. Check harness plugs for tightness... could have been bumped loose during maintenance.

 

[Don S]

Re: Mercruiser MCM 5.7L V8/350 Thunderbolt IV Will not start after Tune-Up

Start with this chart.

 

[flightrn]

Re: Mercruiser MCM 5.7L V8/350 Thunderbolt IV Will not start after Tune-Up

Thanks much...will be working on it tomorrow...will repost with results thanks guys!!!

 

[flightrn]

Re: Mercruiser MCM 5.7L V8/350 Thunderbolt IV Will not start after Tune-Up

THANK YOU!!!!!!!!!!!!!!! I used the algorythm above and traced it down to a bad coil....you guys are the best