flyingduck
Cadet
- Joined
- Oct 30, 2005
- Messages
- 7
I found a Chrysler 4hp saltwater outboard on Craig's List for $100. Model number is 42H9F. The guy ran it for me in a tub for a minute or two so it seemed to be in good working order so I bought it.
The gas tank seemed to have some varnish in it so I removed it, filled it with paint thinner and metal nuts to get the varnish out. Then I emptied the thinner and nuts out of it. Wasn't sure if I'd gotten it all so I added a fuel filter to the fuel line just in case.
In the interest of maximizing performance I installed what was supposedly a compatible NGK iridium spark plug.
When I put it on my little 8 foot boat (fresh gas premixed at 50:1) that I use for crabbing, it fired right up and seemed to run like a champ. Then it started slowly losing power and eventually quit, putting up a little smoke from the back. Once it had cooled a bit I tried starting it up again and it did start but didn't seem to have the power it originally had. Once again power fell, it died and put up a little more smoke. I haven't messed with it since.
Any clues as to what's going on here? Was it possibly too hot of a plug? What might be going on with this motor and how might I remedy it? Or should I just give up on it and go searching for another outboard?
The gas tank seemed to have some varnish in it so I removed it, filled it with paint thinner and metal nuts to get the varnish out. Then I emptied the thinner and nuts out of it. Wasn't sure if I'd gotten it all so I added a fuel filter to the fuel line just in case.
In the interest of maximizing performance I installed what was supposedly a compatible NGK iridium spark plug.
When I put it on my little 8 foot boat (fresh gas premixed at 50:1) that I use for crabbing, it fired right up and seemed to run like a champ. Then it started slowly losing power and eventually quit, putting up a little smoke from the back. Once it had cooled a bit I tried starting it up again and it did start but didn't seem to have the power it originally had. Once again power fell, it died and put up a little more smoke. I haven't messed with it since.
Any clues as to what's going on here? Was it possibly too hot of a plug? What might be going on with this motor and how might I remedy it? Or should I just give up on it and go searching for another outboard?