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Thread: 87 sammi 4wd problems Reply to Thread
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Topic Review (Newest First)
07-08-2010 06:17 PM

I just got to the same info a few days too late!

Weber Carbs:

though they do mention can now stall going down hill.
07-06-2010 08:59 PM
Haptown Glad to help. Have you tried a fast stop or going down a steep bank slowly yet? If your float levels aren't correct you still might have the flooding problem in these situations.
07-06-2010 08:39 PM
suk87 hey guys i got the problem fixed...after goin to the application that haptown left on here for me i turned the weber around and now it goes very nice no more floddin out on a hill side thanks to you guys
07-01-2010 09:03 PM
Baratacus You'd need an air/fuel mixture gauge. Checking the plugs told you that it was running too rich, but if you want to see how bad it is and at what rpm range it has the bigest issues, you'll need to use a gauge.
07-01-2010 06:30 PM
suk87 the carb is almost new i bought the sammi off a guy and he had all the receipts for the carb...the first thing i done is changed the fuel filter when the problem started didnt help....also for the fuel mixture how do i test it out to if it could be the problem? thanks again
07-01-2010 01:19 PM
Desper Oh, I nearly forgot, change the fuel filter as well, if you have not already, I have known them partially block....causing issues on full/heavy throttle.
07-01-2010 01:07 PM
Baratacus if the plugs are black then it's definitely not too lean. If the float level adjustment was fine before, it should be fine now. Your float could be sticking though from deposites or debris in your carb. How old is the carb? is it due for an overhaul?
07-01-2010 07:21 AM
Desper I'm no expert on Webber carbs....but I think I'd want to be certain the mixture was set correctly before diving into pulling the carb apart to change something that very rarely needs adjusting....would be worth changing the air cleaner (if you haven't already) before getting the mixture adjusted, a dirty one will restrict airflow and ruin the settings.

I had a Webber on an old car I had, where the seal on the mixture screw had perished and it allowed neat fuel to poor into the carb continuously, also worth checking.

I'd also want to check all the fuel lines to be sure there are no leaks...

Might also be worth checking the timing as well..all relatively easy checks/adjustments you can do before pulling things apart.
06-30-2010 09:31 PM
suk87 ok i checked the plugs which i changed not long ago and they have a dark black color to them and also i talked to mechanic today and he said i might have a flot problrm in the carb too...he said it might need adj. any thoughts about that...thanks
06-30-2010 05:38 PM
Baratacus Thanks Despr, my brain wasn't thinking so well. Your right, Running 4wd with the hubs unlocked would only eliminate the hubs or front Birfield joints.. Dropping the front drive shaft would be the only way to eliminate the T-case by itself.

As for the smell of pure gas, that could also be from running too lean. If the mix is too lean the cylinder won't fire and the fuel will be dumped un burnt into the exhaust.

Do you have the O2 sensor still plumbed in the exhaust? The weber doesn't use it, but you can wire an air/fuel mixture gauge to it so you can see what your exhaust is doing. It would help you get the carb dialed in correctly with the right jets and the proper mixture adjustments.

How long has it been doing this? Have you made any changes to the intake or ignition before this started happening? When was your last tune up? (plugs, wires, cap, rotor)
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