super six dt150 fowlin plugs

K

kemawolf

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i have an older 1988 dt150 i put new plugs in and it ran great second time out its fowlin fuel filter and lines ok ( bout ready to just unbolt it and let it sink) :mad: LOL
 
J

jafa

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Re: super six dt150 fowlin plugs

All equally fouled or just one side ?
 
K

kemawolf

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Re: super six dt150 fowlin plugs

the bottom 2 cylenders are the worst then the middle. top cylenders seem to be the warmest when idleing and bottom set are coldest
 
J

jafa

Petty Officer 2nd Class
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Re: super six dt150 fowlin plugs

Check the thermostats havn't seized open , as a rough guide, you should be able to put your hand on the top cylinders for about 10 seconds before it gets uncomftable. Have you changed oil brands or is this last years oil , different fuel brand ?
 
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kemawolf

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Re: super six dt150 fowlin plugs

yea its lastyears Oil and 1/2 mix last years gas but i put in ahlf tank of 93 octane to top it off i had also use fuel stabilizer last year<br /><br />I didnt think of the thermostats being stuck open would do that guess ill have to get a manual to do that sice im lost on this adventure LOL but do appreciate the assistance
 
J

jafa

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Re: super six dt150 fowlin plugs

Stuck thermostats will not allow it to reach operating temp and could easily cause plug fouling. It might be that the oil had settled out and the engine took a huge big slug of it, either get rid in the gas in the car (or the neighbours if you dont like them). Lets get some fresh gas in there first , new thermostats , or at least test the old ones.
 
B

Buckeye-Basser

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Re: super six dt150 fowlin plugs

I always use fresh gas every year. Come fall I'll run one tank dry and only put as much as I need in the other till winter hits. I've seen outboards run horrible on last years fuel. Put fresh in and they run great.
 
K

kemawolf

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Re: super six dt150 fowlin plugs

thanks sorry phone / puter line was down im gonna try the thermosat thing and see how that goes gonna hve to get manual first to see how the heck to do that
 
K

kemawolf

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Re: super six dt150 fowlin plugs

ok i got both thermostats out boiled them but they appear to be stuck closed>> <br /><br />if the engine over heats does it not allow to be run and self adjust idle and quit so you dont over heat again
 
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