(MARRS-RX7) MARRS 4

Robert Bruno rbruno8
Tue Jun 8 00:52:23 CEST 2010



Matthew Stutt wrote:
> 
> 
>     That sounds like classic sticking float. Side loads are making a
>     float stick open.  Running from T1 to T4 the floats will be down,
>     then throwing a hard turn at them is making one or both stick.  The
>     new fuel pump is probably helping by flowing lots of fuel.  Time to
>     pop the top off the carb and fix or replace the floats.
> 
> 
> It does sound like it could be somehow float related, though I would be 
> surprised if the floats were actually bad or the wrong height.  I would 
> point out that when running under full throttle the float level should 
> not drop...specially not with Bruno's shiney new fuel pump.  Bill is 
> right in that the carb's have fuel slosh problem that IIRC shows up 
> mostly in left handers (has todo with which side the float is hinged on). 
> 
> I'd recommend verifying your fuel pressure, then ordering a new 
> needle/seat for each float bowl.  Depending on the condition of your 
> floats, you may want to order those as well.  Even if you don't replace 
> the floats you should verify their height setting, though if they 
> haven't been messed with previously they never change. 
> 
> When you take the top of the carb make sure you note which screws go in 
> which hole...they are different lengths and if you get them mixed up it 
> can be frustrating.  The best solution would be to head to the hardware 
> store and get some allen head screws to replace those soft headed screws 
> (I believe they are m4?).
> 

Yes it was only on left bends I believe.  Thanks for the great info. 
Bret is going to give things a look over.  I'll let you all know what it 
ends up being.  Luckily I have a FATT coming up to do some good testing.

> 
> 
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