swapped my fuel pump with a 255 lph

ddarkslayer · November 19th, 2009, 10:51 PM

So far that fixed my Idle issue but I have another issue. When ever I start my motor the MIL turns on immediatly. I have a stock Fuel pressure regulator. do I have to change that to an ajustable FPR. I have a feeling in my gut that the motor's running rich.

ddarkslayer · November 19th, 2009, 11:51 PM

anyone I could really use the help

93hatch · November 20th, 2009, 12:22 AM

stocker works fine with the 255, ran it on my fox

ddarkslayer · November 20th, 2009, 12:32 AM

I hit it full throttle and my headers where smoking

93hatch · November 20th, 2009, 12:40 AM

sounds like a timing issue to me dude, go check it with a timing light

sniperd · November 20th, 2009, 02:56 AM

Yeah, Definitely not the FPR, Stocker works fine w/ a 255

flattusmaximus78 · November 20th, 2009, 10:08 AM

Sure, assuming the stock fpr isn't broken. Get a guage on the rail to make sure.

flyin ryan · November 20th, 2009, 10:19 AM

stock fpr should be fine with the pump.. pull the vac line to the regulator and check to make sure there's no gas in the line. If there is then the diagram in the regular is bad and leaking which means you need to replace it but like mentioned above get a gauge on the rail and see what your pressure actually is

ddarkslayer · November 20th, 2009, 12:46 PM

I never ajusted my timing ever It was running find with the timing. but does a fuelpump change require a timing

ddarkslayer · November 20th, 2009, 12:47 PM

Originally Posted by flyin ryan

stock fpr should be fine with the pump.. pull the vac line to the regulator and check to make sure there's no gas in the line. If there is then the diagram in the regular is bad and leaking which means you need to replace it but like mentioned above get a gauge on the rail and see what your pressure actually is

nope the vac is dry

JBIGBOOTSY · November 20th, 2009, 01:03 PM

Retarded timing will cause high xhaust temps

ddarkslayer · November 20th, 2009, 01:22 PM

I have a feeling the timing is advanced but I can relook that

November 19th, 2009, 10:51 PM	#1
ddarkslayer Enthusiast 1988 Mustang 5.0 LX 12.48@118.27 Join Date: May 2009 Location: Folsom, CA Posts: 754	swapped my fuel pump with a 255 lph So far that fixed my Idle issue but I have another issue. When ever I start my motor the MIL turns on immediatly. I have a stock Fuel pressure regulator. do I have to change that to an ajustable FPR. I have a feeling in my gut that the motor's running rich.

November 20th, 2009, 10:08 AM	#7
flattusmaximus78 MM Fanatic 1993 5.ohhhh 14.47 at 96 mph Join Date: Apr 2006 Location: Gatorland Posts: 4,708	Sure, assuming the stock fpr isn't broken. Get a guage on the rail to make sure. __________________ exploder top end with 12 psi of v-tech

November 20th, 2009, 10:19 AM	#8
flyin ryan Hardcore Enthusiast Join Date: Jun 2008 Location: NJ Posts: 1,792	stock fpr should be fine with the pump.. pull the vac line to the regulator and check to make sure there's no gas in the line. If there is then the diagram in the regular is bad and leaking which means you need to replace it but like mentioned above get a gauge on the rail and see what your pressure actually is __________________ 91 gmc syclone - not stock, money maker 91 gt - turbo, stock motor/heads, tfs1, t56 trans 02 zx12r - dyno'd 197 to the wheel and a bunch of other power adder cars

November 20th, 2009, 01:03 PM	#11
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 3,587	Retarded timing will cause high xhaust temps __________________ Bolt-on Abraham Lincoln Log motor. With extra wiring.

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November 19th, 2009, 11:51 PM	#2
ddarkslayer Enthusiast 1988 Mustang 5.0 LX 12.48@118.27 Join Date: May 2009 Location: Folsom, CA Posts: 754	anyone I could really use the help

November 20th, 2009, 12:32 AM	#4
ddarkslayer Enthusiast 1988 Mustang 5.0 LX 12.48@118.27 Join Date: May 2009 Location: Folsom, CA Posts: 754	I hit it full throttle and my headers where smoking

November 20th, 2009, 02:56 AM	#6
sniperd Regular 1989 Mustang LX 5.0 Join Date: Apr 2009 Location: Nevada Posts: 315	Yeah, Definitely not the FPR, Stocker works fine w/ a 255

November 20th, 2009, 12:46 PM	#9
ddarkslayer Enthusiast 1988 Mustang 5.0 LX 12.48@118.27 Join Date: May 2009 Location: Folsom, CA Posts: 754	I never ajusted my timing ever It was running find with the timing. but does a fuelpump change require a timing

November 20th, 2009, 01:22 PM	#12
ddarkslayer Enthusiast 1988 Mustang 5.0 LX 12.48@118.27 Join Date: May 2009 Location: Folsom, CA Posts: 754	I have a feeling the timing is advanced but I can relook that

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