Grodus

I’m having a problem with a gas solenoid on my Wren Supersport. It works some starts but during others, it sticks closed and will open if I beat on it with a screwdriver. When it does function, the starting EGT is being exceeded. Not sure if both problems are related. Does anyone know where I can find a Jet Tronics gas valve that is compatible with this engine? I can not find one.

thank you,
Cody

joeflyer

My Feedback: (48)

https://www.turbinesolutions.co.uk/t...s?pagenumber=4

Grodus

Thank you Joe!

cody

Grodus

Does the gas solenoid modulate during the start sequence or is it simply open or closed?

basimpsn

My Feedback: (5)

Some ecu modulate the valve to control the gas flow...Others supply 5v to fully open the valve but install a restrictor inside the gas supply line

CARS II

My Feedback: (7)

Sounds to me that what it needs a is a few drops of 3 in 1 oil to help it get loose.

Grodus

Part of if not all of my problem was an ECU batt that showed charged voltage but couldn’t handle a load. Went to a new bigger battery and starts are normal temps and the solenoid worked every time. I monitored the solenoid with a stethoscope before doing a full start and it worked ever time.

CARS II

My Feedback: (7)

Thank you for reporting back.

It's always educational to learn the solutions to the problems.

The gas solenoids need a few drops of oil ( 3&1or Teflon ) every now and then because the gas is cold and it tends to dry them leading to getting stuck.

Grodus

Thank you Cars. I have been operating this engine for 10 years and I had no idea about lubing the valves. I have been operating LiPos for much longer and just got an education on how a $20 batt can fall on its arse and cause problems.