Offshoreonly.com

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   Engine hard to start when cold (https://www.offshoreonly.com/forums/general-q/254268-engine-hard-start-when-cold.html)

87MagnumII 05-23-2011 09:00 PM

Engine hard to start when cold
 
Just breaking in my new engine and it runs fine once warm but is very hard very hard to start. It's acting like it s flooding but can't figure out why. Here is the run down

350 with vortec heads, 650 demon w/mech secondary, lt4 cam, performer rpm manifold. Mallory marine 4110 electric fuel pump that is pre set to 7 psi.

I have the four corner screws turned out 1 1/4 turns. The floats seem to be letting fuel come about 3/4 up the site glasses. It spits and sputters but once it clears out it runs and idles fine. Once warm it starts pretty easy i just cant figure out whats up Any help would be appreciated as the first big weekend is coming up as we all know, lol.

rexcramer1 05-23-2011 09:04 PM

Does that carb have a choke plate on it?

87MagnumII 05-23-2011 09:15 PM

Yes it has electric choke

rexcramer1 05-23-2011 09:25 PM

Assuming the plate is closed all the way when the engine is cold, I would experiment with different starting procedures.

Are you pumping the throttle before you turn the key? Pumping the throttle while the key is turned?

87MagnumII 05-23-2011 09:29 PM

Plate is closed all the way when cold. After it starts it loads up when you try to rev it up a little. It takes about 30 seconds for it to clear up and blows out a bunch of smoke until it finally clears up. I'm afraid it's gonna wash out my new rings if I dontfigureit out

kubelwagonman 05-23-2011 10:06 PM

i set chokes on my holeys at wide open unless real cold,,,,pump it a few more times an idle up for warm up,....chokes a waste a time in texas!!!

87MagnumII 05-23-2011 10:13 PM


Originally Posted by kubelwagonman (Post 3411021)
i set chokes on my holeys at wide open unless real cold,,,,pump it a few more times an idle up for warm up,....chokes a waste a time in texas!!!

So you think it may be over choking itself?

Boat1 05-24-2011 08:03 AM

I would completely remove the choke plate, shaft, and related hardware. If the engine is correctly set-up it will start and run when cold, warm it up by running 1200 rpm for a minute or so and your good to go. I have seen the plate close when wave jumping re-entry happens, this dumps alot of fuel. Chokes on a boat are usually more trouble than they are worth. If you must retain it, adjust it so it has the minimum effect.

87MagnumII 05-27-2011 10:28 AM

we adjusted the choke open a little and lowered fuel level in bowls and all is good now, thanks for the help guys


All times are GMT -5. The time now is 05:45 AM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.