79 mercury 90hp 900 no spark

[talbee]

Thanks Chris. One last question. Is there any way to rebuild a trigger and not spend $300? I'm just curious to see if it's just a loose wire connection.

 

[CharlieB]

I do not know of any separate trigger. It only is available as part of the Dist. CDI Electronics used to sell them, don't know I've been gone a few years. The Amazon link should be a good assy.

 

[talbee]

Really hard to find a complete distibutor assembly. I found out the trigger cannot be rebuilt.

Is there an assembly that would be compatible? I know a 115hp is, but any others?

 

[Faztbullet]

That trigger is used on the 4 and 6 cylinder inlines of various horsepowers, the only difference is the trigger wheel.....I do not suggest buying a used unit as the wires are usually rotten and usually no warranty and seller usually don't test them.

 

[talbee]

Thank Faztbullet.

I called various local marine shops. Apparently they're idiots and don't know any compatible parts and aren't willing to help find one since my motor isn't 1985-newer. But, they're willing to try to sell me a motor.

If any of these great minds in these forums can help me find a compatible distributor assembly for my 1978 Mercury 900 90HP that would be great. It's about 7 months since it has seen water.

 

[Chris1956]

CDI Electronics says that sell one. It is a bit different than OEM, but they claim it will work.

http://www.cdielectronics.com/produ...393-3736-393-3736a23-393-3736a77-393-3736a79/

 

[talbee]

Thanks for the link. A few people have told me it cannot be rebuilt and I need to buy the part as a whole. Is this actually true?

 

[talbee]

Can my trigger/distributor be rebuilt?
I put the part number in and only comes up the shaft part, not the entire unit.

 

[Chris1956]

I have never used that part from CDI. There is a PDF you can download that tells how to install it. I would review that and see if it makes sense.

 

[talbee]

I know some distributor assemblies can be took apart.

I took off mine to to see if it's possible, but it doesn't appear to be. Some ppl say it can be, while others say "no". I would like to know what is true pls.

I've been having this issue for about 7 months and got it narrowed down to a possible trigger issue. I really want to take the family out on our boat again. I'm getting to the point where I wanna give up and just buy a new/used motor because specific parts, like the distributor assembly, are very hard to find.

I would really like to know what distributor assemblies are compatible so I can expand my searches. I've been looking for this part for almost 3 weeks.

 

[Faztbullet]

I would really like to know what distributor assemblies are compatible so I can expand my searches.

As I posted earlier....

That trigger is used on the 4 and 6 cylinder inlines of various horsepowers, the only difference is the trigger wheel.....I do not suggest buying a used unit as the wires are usually rotten and usually no warranty and seller usually don't test them.

If you need HPs...4 cylinder 650/800/850/80/85 and 6 cylinder 900/1150/1500/90/115/140 pre 1980. And years ago Repair/CDI would repair them(trigger) but now they only do the "horseshoe" trigger on a R&R basis...so no they are not repairable...

 

[talbee]

Fatzbullet, thank you so much