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What to do???

K

K85k03

Registered User
Location
Dove Creek, Colorado
I have a rotary engine in a mazda and I am having problems getting it to run very well. I seems that after I let it sit for a while and go out and try to start it, it will start right up but wont idle. Then the longer I try to start it the more gas comes out of the exhaust and when I check the plugs they are filled with gas. The carb is soaked with gas too. But I don't know much about rotary engines and I don't know what the problem is. or if there is a problem, atleast with the gas.

Also I replaced the old electric inline fuel pump with an aftermarket on, could this be the problem?

Thanks. :D
 
spencurai

spencurai

Purple Burglar Alarm
Location
WVC,UT
that is probably the issue. the old pump might have pushed a lesser pressure and now you are just squirting gas in there with a pump that pumps too much!!
 
Caleb

Caleb

Well-Known Member
Location
Riverton
yep what spence said...is it FI...you did mention a carb but I thought the rotarys were FI...some FI systems(most actually) regulate the pressure to what is needed at the fuel rail...do you still have the stock pump...was it bad and why did you put an aftermarket one in...if you can find out what PSI the stock pump is and what PSI the aftermarket one is and then find out what PSI the system requires...
 
K

K85k03

Registered User
Location
Dove Creek, Colorado
yep the old pump was bad but a friend of mine had an inline layin around and I thought I would try it. I guess its my culprit. and the car is an 81 so its still carb. I wish it was FI. o well it was a free car. and Thanks for the help.
:D
 
Caleb

Caleb

Well-Known Member
Location
Riverton
if you can find what the correct pressure is supposed to be then I dont see why it would be a problem to use a regulator...you prolly have a pump for a FI system...the carbs only take like 8-15 psi where FI usually take upwards of 45-90 (sometimes more and sometimes less like TBI they take almost the same as a carb)...
 
spencurai

spencurai

Purple Burglar Alarm
Location
WVC,UT
I would get a regulator from checker and put it inline between the carb and the pump and dial down the pressure. that should solve your problems.
 
Caleb

Caleb

Well-Known Member
Location
Riverton
your float is stuck or has a hole in it?!?!?! I don tknow much about carbs, just a little form rebuilding the little honda 2 stroke carbs...:D
 
troutbum

troutbum

cubi-kill
Location
SLC
know nothing about yer carb, but q-jets and t-quads will have that prob if the fuel wells leak. A little JB weld will take care of it.

HTH
 
troutbum

troutbum

cubi-kill
Location
SLC
Well again not at all familiar with this carb, but on a q-jet, when you remove the base plate you will see the gasket soaked or stained with fuel right under the fuel wells...

Good luck.

I suppose you could also fill the wells with fluid once you have it apart and watch to see if they leak...
 
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