Is there anyway that you can test your fuel pump motor??? I think it may be that, and it just needs to be replaced.

I had the same issue with the GSL-SE, the dude had put some stop leak in the radiator and it was clogging up at the thermostat. Flushed it and replaced the thermostat and it was fine after that.

I don't think that would cause the problem, unless maybe it was seriuosly over heating. But other than that your thermostat is closed when your engine is cold and it opens up when your engine heats up. And it sounds like your saying that since it was stuck close that it was bogging the engine threw the water pump. https://www.nopistons.com/forums/pub...1047683561.gif Is that why you think it was doing that??? Becasue that wouldn't do that.

Temp and Coolant flow are fine

Now with all the parts cars you have laying around, and I know the one I traded you has a good fuel pump, just take 20 minutes and swap another fuel pump into the car and see if that fixes it.

Care package from MAzdaformance arrived last night.



While removing the inlet hose to the fuel filter, a vile reddish brown substance started oozing out of the line...****!!!!! RUST!!!!!!!!.



Change fuel filter.



Move to rear of car, remove fuel pump, Sock is full of crud.



Make decision to use another fuel pump with NEW sock.



Start car up. Still has idle issues, but the 4K-5K stumble is gone https://www.nopistons.com/forums/pub...IR#>/smile.png





Based on the rust and crud in the tank I will replace the tank this weekend. I will also recirculate some OSPHO through the fuel line to flush out any rust crud.



The primary/secondary Injectors will also be pulled and sent out for cleaning

sucks, i think i gotta pull the gsl-se injectors and clean em too, leans out at high rpms



mike

Gives me a chance to find all the vac leaks.



Lets see whats on the Agenda this weekend:

1. Pull parts from Donor Car {Pedals, Mastercylinders, Harness and ECU}

2. Pull Steering Column, Pedal Cluster and Master Cylinders from Beater

3. Install Manual Parts in Beater

4. Pull Auto and Flexplate

5. Install Pilot bearing, flywheel and clutch

yadaydyay yada

do

bee

dobee

do



mike

rust is such a pain in the ass.