Is there any device to prevent fuel flooding carbs ?
I think I red a post about this but didn't save it and I couldn't find it now.
I think I red a post about this but didn't save it and I couldn't find it now.
Any device to prevent flooding carbs ?
- Thread starter CeylonstonE9
- Start date
Mike Goble
Well-Known Member
There are several reasons for carburetor flooding.
1. Fuel level is too high - adjust the floats to lower it.
2. Needle and seat assembly is dirty or faulty - replace it.
3. Floats are faulty - replace them. Make sure they move freely through their range.
4. Fuel pressure is too high - reduce it.
5. Fuel line is too close to a heat source and fuel drips in after you shut the engine off - shield or reposition it.
6. Pre-start flooding is usually caused by pumping the throttle too much.
1. Fuel level is too high - adjust the floats to lower it.
2. Needle and seat assembly is dirty or faulty - replace it.
3. Floats are faulty - replace them. Make sure they move freely through their range.
4. Fuel pressure is too high - reduce it.
5. Fuel line is too close to a heat source and fuel drips in after you shut the engine off - shield or reposition it.
6. Pre-start flooding is usually caused by pumping the throttle too much.
a device ? no,
as @Mike Goble
1. Fuel level is too high - adjust the floats to lower it., use a thicker shim on the fuel valve, max is 2mm
2. Needle and seat assembly is dirty or faulty - replace it., fuel valve could be defective
3. Floats are faulty - replace them. Make sure they move freely through their range.
4. Fuel pressure is too high - reduce it.
5. Fuel line is too close to a heat source and fuel drips in after you shut the engine off - shield or reposition it.
6. Pre-start flooding is usually caused by pumping the throttle too much.
7, during driving float can get stuck on gasket excess, to solve the issue stop the car and hit the carb uisng a rubber mallet or similiar to free the float, a carb overhaul is recomentded
There's a device to keep gas in the lines near the carbs - a check valve
Last edited:
oldcoupe
Well-Known Member
Worthwhile updating the vent chimney - http://e9coupe.com/tech/zeniths/bmw1/bmw1.html ??
Quote:
If there is a Tower, like this one, Vent Chimneys must be fitted.
The BMW Vent Chimney Modification Kit, part number 13 11 1 259 526 should be used.
When I read about this, it looked as though it was an urgent upgrade to the carbs.
I did this years ago, and assumed it helped the carbs cope with flooding by tipping the excess into the downdraft tube.
Quote:
If there is a Tower, like this one, Vent Chimneys must be fitted.
The BMW Vent Chimney Modification Kit, part number 13 11 1 259 526 should be used.
When I read about this, it looked as though it was an urgent upgrade to the carbs.
I did this years ago, and assumed it helped the carbs cope with flooding by tipping the excess into the downdraft tube.