Engine issues

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mowens
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Posts: 38
Joined: Fri Apr 10, 2020 10:25 pm

Engine issues

Post by mowens »

So I rebuilt carb, redid intake manifold, and engine started ran great.

Went to take family out next day and no start just turns over. Fiddled a bit and figured it was a bad coil. Replaced coil and ballast resistor. Now it starts but only as long as your holding the switch in start - which I understood was a sign of bad ballast resistor, which is brand new.

Any ideas?

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prowlersfish
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Re: Engine issues

Post by prowlersfish »

Yes ,sounds like the resistor , but I have seen the switch do it too . You did not say what model but if you have dual helms try the other one .
TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
2009 TROJAN RENDEZVOUS
Port Kinsale 2010 & 2011. Solomons get together 2011.

mowens
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Posts: 38
Joined: Fri Apr 10, 2020 10:25 pm

Re: Engine issues

Post by mowens »

454 crusaders with quadrajets.

It was a bad resistor. Put another new one in fired right up.

Now the new problem is the fast idle set about 2500 RPMs. I don't see any kind of adjusting screw.

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prowlersfish
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Re: Engine issues

Post by prowlersfish »

mowens wrote:
Fri May 22, 2020 1:13 pm
454 crusaders with quadrajets.

It was a bad resistor. Put another new one in fired right up.

Now the new problem is the fast idle set about 2500 RPMs. I don't see any kind of adjusting screw.
Fast idle screw is on the same side as the choke linkage (well hidden )
TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
2009 TROJAN RENDEZVOUS
Port Kinsale 2010 & 2011. Solomons get together 2011.

mowens
Registered user
Posts: 38
Joined: Fri Apr 10, 2020 10:25 pm

Re: Engine issues

Post by mowens »

So on mine it looks like the front piece once held a screw but it doesnt now. Whats funny is the other carb is the same but fat idles perfect at 10k

Hope this shows what im seeing. That large flathead screw doesnt seem to do anything except hold those parts on.
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prowlersfish
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Posts: 11886
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Re: Engine issues

Post by prowlersfish »

Forgive the poor photos of photos . The screws viewed from the bottom of carb . I have always hated chokes on a boat , I used to set my lean or open by disconnecting .But you have to play with the throttles till they warm up a bit Nice thing about diesels no choke . Did I tell how much I hate chokes on a boat ? :mrgreen:

I am not 100% all did have the screw ,but thinking they did and always had trouble seeing it . And that was in the old days when I had good eyes .
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TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
2009 TROJAN RENDEZVOUS
Port Kinsale 2010 & 2011. Solomons get together 2011.

mowens
Registered user
Posts: 38
Joined: Fri Apr 10, 2020 10:25 pm

Re: Engine issues

Post by mowens »

I see what your referencing. Mine does not have that screw. It does have threads for one though.

Yea chokes suck lol I do like diesels but in not spending that yet.

So since my screw does not exsist is tgere a different way? The other motor also does not uave the screw but fast idles perfect.

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