88 3.0L Mercrusier turning over but wont start

[88Glastron]

1988 3.0L Mercruiser

I went to start the motor up this season and it would not turn over. I removed the starter and replaced it due to it being in horrible shape. Now the motor was turning over but would not fire. I checked, cleaned, and gapped the points and replaced the spark plugs and now I have spark but it wont fire. The firing order is correct and I have a remote ignition switch on the coil and on the starter which allows me to bypass the neutral safety. I am putting starter fluid in the carb as well as using fresh fuel. The next step is a compression test but can anybody think of anything else? Any input would be greatly appreciated.

 

[candrive55]

Re: 88 3.0L Mercrusier turning over but wont start

hmm could be about twenty things off the top of my head. For generic motor stuff I go to hotrodders.com

 

[dubs283]

Re: 88 3.0L Mercrusier turning over but wont start

if you have spark and fuel, next step is compression

if compression is for sure good, you missed something in fuel or spark

BTW - do you have good spark?? nice sharp blue spark?? or weak thin orange spark?? - you should be able to hear a spark tester in the coil wire from the helm while cranking

some light reading:

http://forums.iboats.com/showthread.php?t=335407