Floods while sitting if engine is hot.

[JW]

I know this issue has been addressed more than once on this forum, but I have never found the answer (if there is one). When my 90 GW is hot and I turn it off for 5 min. to an hour, it is hard to start do to flooding. I have the Edelbrock 1406 on now, but it did it with the stock 2150 before. I was once told it was a problem of perculation (heat soak). Any solutions?
Thanks.

[Max Power]

I always thought it was the opposite of flooding... the underhood temps evaporate the gas from the bowl. The fumes get stored in the carbon canister, if you still have one.

when starting hot are you pressing the accelerator half to three quarters of the way to the floor, holding it there and turning the key until it starts? THis is the procedure described in the owners manual for hot starting. I assume b/c it gets gas to the carb quick.

good luck,
Robert

[JW]

Robert,
I've tried that, and about every other thing in the book. When it finaly does start the exhaust is pretty black for a couple of seconds and I can smell fuel before, so I'm almost positive it is flooding. I even put a spacer under the carb that is supposed to transfer less heat, but all for not so far.
Thanks,
Jon

[Merc69]

I have the same thing happening with the Edelbrock Carb. I have been told to adjust the float down a little. The heat from sitting after the engine is shut off causes the fuel in the bowl to expand and this is the resulting flooding. I havent pulled the carb apart to bend the flkoat tab down but that is coming soon. Hope this helps.

[Michael]

Yeap check your float level....very important with the edelbrock. Been there with mine.

[rhamby]

I've got that same setup on my J, but haven't had the problem. however, I've had similar issues with others. It could be vapor lock (well, actually, boiling in the lines).

How's the line from the pump lead to the carb? Is it the metal tube? Just a general check to see if it is in contact with a hot place on the engine might be useful. if the fuel in the line gets really hot, especially in a small area of the line, the fuel will boil and force fuel up the line and in to the carb. I've seen people switch to rubber line from metal, and I've seen others switch to metal from rubber to aleviate it. The best solution I saw was clothespins. Ever heard of that b4? they took clothespins and clipped them on the line to creat a heat sink. I thought it was hilarious, but ingenious. I don't think I could live it down, tho...

[JW]

I'll take a look at my float level and fuel lines tomorrow. I don't know if I could bring myself to stick clothespins under the hood, but I'll think of something smile.gif
Thanks

[dharmabum]

Another option is to put an insulator gasket between your carb and intake. The aluminum intake transfers engine heat to the carb causing this condition and a phenolic spacer between them will cool your carb down and should stop the problem. Just dont use an aluminum spacer or it will be the same thing. I have seen this problem with most of the 1405/1406s I have had.