Fuel pressure gauge bouncing?

Go down

Fuel pressure gauge bouncing?

Post  blu69MachI on October 7th 2016, 2:44 pm

I have a magnafuel 500 and a brand new liquid filled 30 psi gauge before the regulator. while the car is running the gauge reading is above the 30psi mark and it drops to 25psi about every 2 seconds. After the regulator it continues to keep bouncing. Both gauges are new.
avatar
blu69MachI

Posts : 58
Join date : 2011-10-17
Age : 43
Location : Omaha, Nebraska

View user profile

Back to top Go down

Re: Fuel pressure gauge bouncing?

Post  bosshoss on October 7th 2016, 4:09 pm

Is this a dead head system?

What brand reg?

dkp
avatar
bosshoss
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 469
Join date : 2009-08-10

View user profile

Back to top Go down

Re: Fuel pressure gauge bouncing?

Post  blu69MachI on October 7th 2016, 4:19 pm

Holley regulator with Vacuum port for the SV1. <--I got this one from prosystems. and the pump has a external bypass on it. The gauge before the regulator it bouncing as well.
avatar
blu69MachI

Posts : 58
Join date : 2011-10-17
Age : 43
Location : Omaha, Nebraska

View user profile

Back to top Go down

Re: Fuel pressure gauge bouncing?

Post  dfree383 on October 7th 2016, 4:35 pm

Dirt in the regulator ?
avatar
dfree383
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 14027
Join date : 2009-07-09
Location : Home Wif Da Wife.....

View user profile

Back to top Go down

Re: Fuel pressure gauge bouncing?

Post  blu69MachI on October 7th 2016, 4:45 pm

It looked good when i checked the fuel lines. Would having too small of fuel lines or bypass line affect that? I have 8an size. I just read i should have no less than 10. With that pump.
avatar
blu69MachI

Posts : 58
Join date : 2011-10-17
Age : 43
Location : Omaha, Nebraska

View user profile

Back to top Go down

Re: Fuel pressure gauge bouncing?

Post  Mustang-junky on October 7th 2016, 8:56 pm

My liquid filled fuel pressure gauges(engine compartment mounted) always bounced until I drained the fluid out. Work fine now.

Jess
avatar
Mustang-junky

Posts : 421
Join date : 2011-12-04
Location : Central New York. The state, not the city.

View user profile

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum