Fuel Pressure issue
11-18-2022, 08:40 PM
#21
Hello Raj
It might be best for Ron to answer that. Depending on how you look at boost charts 135 KPA could either be 4# or 19.7 PSI. I have HPT logging a calculated boost and have never seen 20 in the logs.
What is your take on the return fuel going into the D-Side tank? That is really my question in the post.
I got into it yesterday but forgot about all the exhaust in the way. Had to drop the sway bar and one muffler before I could even SEE the T fitting. "It's always something". And because of the High location (not at all like a C6) the Quick Disconnect fittings are not at all quick. Also, It looks like I'll have to cut the main hard line going forward. My Y block and fittings are a mile long. I might just replace the whole line now with PTFE and get it over with. Project Creep! It haunts me.
It might be best for Ron to answer that. Depending on how you look at boost charts 135 KPA could either be 4# or 19.7 PSI. I have HPT logging a calculated boost and have never seen 20 in the logs.
What is your take on the return fuel going into the D-Side tank? That is really my question in the post.
I got into it yesterday but forgot about all the exhaust in the way. Had to drop the sway bar and one muffler before I could even SEE the T fitting. "It's always something". And because of the High location (not at all like a C6) the Quick Disconnect fittings are not at all quick. Also, It looks like I'll have to cut the main hard line going forward. My Y block and fittings are a mile long. I might just replace the whole line now with PTFE and get it over with. Project Creep! It haunts me.
Racetronix sell the adjustable hobbs/Pressure switches that are easily calibrated with a hand pump and guage!
11-19-2022, 12:28 AM
#22
Racer
Thread Starter
Yep - Good advice. I plan to test the Hobbs to find where its REALLY activates. It is adjustable. I was told it was set at 4# boost out of box.
The car is on a lift now sow I can do all kinds of F'n around with it.
You are VERY fortunate that you have no experience with the C6 Fuel Tank System. My Son is a GM engineer - except for him - they should all be hanged!!
Lowering the pump is on tomorrows list...
Thanks for the answer
The car is on a lift now sow I can do all kinds of F'n around with it.
You are VERY fortunate that you have no experience with the C6 Fuel Tank System. My Son is a GM engineer - except for him - they should all be hanged!!
Lowering the pump is on tomorrows list...
Thanks for the answer
11-20-2022, 12:07 AM
#23
I am confident if you lower the pump and shorten the hoses, have the pressure switch on at 2-3psi for the secondary pump, and keep a reasonable amount of good fuel in the tank, you will solve your problems without the other radical changes you propose! Lots of succesful ECS secondary fuel pump out there with zero probs!