Need HELP! Fuel problem?

Tony91LX · 08-23-2001, 07:13 AM

I have a 351, with Trick Flow head, Trick Flow Intake, 24lb inj, and a 190 fuel pump.

The car pulls hard and strong through first and second gear, but third gear at 4500rpms the car noses over and won’t rev any higher.

I started with 42 lbs of fuel pressure (vacuum off) (plugs electrode white)

at 46 lbs. a little better but still has trouble in third (plugs electrode white)

at 50 lbs. even better but still has trouble reving to 5,000 (plugs electrode white

Last try was
58 lbs. worse, third gear would surge at about 3,500 that’s when I shut it down (plugs still looked lean)

Do I need more fuel pump or larger injectors? or is it some thing else?

Thanks

WADS56 · 08-24-2001, 12:29 AM

How old is your fuel filter?

------------------
NA 347 W/ stage 2 Canfield heads, out of the box Victor 5.0 intake, solid roller cam, Aeromotive fuel system.
MY CAR http://www.mustangworks.com/cgi-bin/...splay.cgi?1288

zepherman · 08-24-2001, 01:29 AM

doubt its the filter or it would jerk and surge all the time not just in 3rd, but Its worth a try i guess because a new filter is cheap. my guess would be that its the 24#ers but thats just a guess. Good luck!

Tony91LX · 08-24-2001, 06:35 AM

I am going to try the following this weekend;

Change the plugs and fuel filter
Change the TFI Module
Check timing and TPS position

Install my pillar mount Fuel Pressure Gauge
Install my 42 lb injectors ( saving until my T-Trim arrives )
Wait until my new 80mm C&L shows up

If this doesn’t help I’ll post it again.

Thanks

08-23-2001, 07:13 AM	#1
Tony91LX Registered Member Join Date: Jan 2000 Location: Feeding Hills, MA Posts: 114	Need HELP! Fuel problem? I have a 351, with Trick Flow head, Trick Flow Intake, 24lb inj, and a 190 fuel pump. The car pulls hard and strong through first and second gear, but third gear at 4500rpms the car noses over and won’t rev any higher. I started with 42 lbs of fuel pressure (vacuum off) (plugs electrode white) at 46 lbs. a little better but still has trouble in third (plugs electrode white) at 50 lbs. even better but still has trouble reving to 5,000 (plugs electrode white Last try was 58 lbs. worse, third gear would surge at about 3,500 that’s when I shut it down (plugs still looked lean) Do I need more fuel pump or larger injectors? or is it some thing else? Thanks

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08-24-2001, 12:29 AM	#2
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	How old is your fuel filter? ------------------ NA 347 W/ stage 2 Canfield heads, out of the box Victor 5.0 intake, solid roller cam, Aeromotive fuel system. MY CAR http://www.mustangworks.com/cgi-bin/...splay.cgi?1288

08-24-2001, 01:29 AM	#3
zepherman Registered Member Join Date: May 2001 Location: Oklahoma City OK USA Posts: 236	doubt its the filter or it would jerk and surge all the time not just in 3rd, but Its worth a try i guess because a new filter is cheap. my guess would be that its the 24#ers but thats just a guess. Good luck!

08-24-2001, 06:35 AM	#4
Tony91LX Registered Member Join Date: Jan 2000 Location: Feeding Hills, MA Posts: 114	I am going to try the following this weekend; Change the plugs and fuel filter Change the TFI Module Check timing and TPS position Install my pillar mount Fuel Pressure Gauge Install my 42 lb injectors ( saving until my T-Trim arrives ) Wait until my new 80mm C&L shows up If this doesn’t help I’ll post it again. Thanks