Need help with 1978 Mercury 90 HP

[jonndena]

I got gas and spark but it won't even think about starting. Is there something deeper i am missing? It is a 6 cylinder 1978 90 HP Mercury and has all ways run perfect. Any help would be great.

 

[swordfish25]

Re: Need help with 1978 Mercury 90 HP

I would start out with a compression check. If that is good, try new plugs and check the timming. Do the plugs look wet or dry? if they are dry, Maybe the eletc. choke is not comming on.

 

[jonndena]

Re: Need help with 1978 Mercury 90 HP

Its got new plugs and the plugs are wet. I am wondering about the timing also but i don't even get a little backfire or anything. Gas and spark most of the time causes some sort of bang, this ones got me a bit stumped.

 

[P 0 P E Y E]

Re: Need help with 1978 Mercury 90 HP

Plugs are wet with gas? or water?

Check your fuel for water

Check your combustion chambers for water

Does the engine sound different when cranking?

Look at he spark advance, see if it moves when you move the throttle

Clean off the plugs and try it again