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Jeff G.
Jeff G., Marine Mechanic
Category: Boat
Satisfied Customers: 4728
Experience:  42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance
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1985 115 hp straight 6 cylinder see's to run cool, stalls

Customer Question

1985 115 hp straight 6 cylinder
see's to run cool, stalls when putting into
gear. everything has been cleaned and checked
Submitted: 2 years ago.
Category: Boat
Customer: replied 2 years ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Jeff G. replied 2 years ago.

Can't call right now.

I've never seen an inline run too cool. They run on the hot side if anything.

Remove the idle stabilizer, they are prone to failure.

Remove the air jet in the top of the float bowl, leave it open.

Richen the idle mixture, about 2 turns from lightly seated.

What jets are in the carbs? Which spark plugs are you using?

Customer: replied 2 years ago.
your idea didn't work, adjusted carbs to 2 turns and removed idle jets,
put the boat in the water and it stalls when you put it in gear.
thanks John
Expert:  Jeff G. replied 2 years ago.

What is the timing set at?

What is the idle speed?

Double check nothing is wrapped around the propshaft.

Run on the hose for about 5 minutes, shut engine off and quickly pull all the spark plugs, at least the top 5. Check for any tiny drops of water on the plugs or a milky look.

Which jets and spark plugs are you using?