shurflo pump problem

[dsg]

install an inject kit about four weeks ago. drove the car yesterday and had knock,would not go away. so i checked the pump and lines. well the pump will run but not prime or push any fluid. checked the diaphragm and all looks well.
anybody else having problems with pump failure? has anyone delt with shurflo on warranty issues?
thanks don

 

[Razor]

If the pump spins, then the motor portion is OK.

If the motor is ok, more than likely your issue has to do with something in the pump head.

What model shurflo do you have? What chemical was run through it?

Sure its not debris contamination in the head of the pump?

 

[dsg]

Hi Razor; the pump is a 8000-541-236, viton valves, santoprene diaphragm.

i pulled the head off to check it out and all looked well. the valves and diaphragm
looked pristine. there was on debris or contamination in the pump head.
i've been using a 50/50 mix of water and meth or just straight meth, trying to find the right tune.

thank's for your help, don

 

[Razor]

Pull out the check valve that's under the pressure switch assembly and inspect it. It will have a viton rubber o-ring. That can cuase your condition.

 

[dsg]

Thanks Razor, i'll look at that..


one quick question if you don't mind. would i be better off swapping out the valves and diaphragm to say buna and geolast or epdm and santoprene if running meth.

once again thank you for your insight, don

 

[Razor]

Thanks Razor, i'll look at that..
one quick question if you don't mind. would i be better off swapping out the valves and diaphragm to say buna and geolast or epdm and santoprene if running meth.
once again thank you for your insight, don

There are other materials. Sorry the tech assist as to the internal changes stops here... Kinda like Coke giving out the recipe

Good luck.. your close..

 

[dsg]

Sorry the tech assist as to the internal changes stops here... Kinda like Coke giving out the recipe

Good luck.. your close..


not a problem; appreciate all your help. i'll burn the lines tomorrow don