Cutting out at About ~4000

Black331Stang

Active Member

Apr 29, 2003

1,485

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36

Long Island, NY

May 19, 2004

#1

• May 19, 2004

• #1

heres my problem, if i get on my car, or rev it, the car will start to hesitate at around 4000 or so. the car doesnt chug or bounce, its just once the rpms hit 4000 it doesnt sweep thru clean, it hesitates as it reaches there and car looses power. now i think my timing way to advanced still could this be the problem? and my fuel pump sounds to me liek its a littel louder than usual, could this be another problem? i would just retard the timing but im right up against my radiator hose and cant go any further and i thought i was at about 10-11 so i would rather avoid oulling it and dropping it back in. thanks for any help

 

bmorrisj

Member

Sep 26, 2003

449

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17

Buena Park, CA

May 19, 2004

#2

• May 19, 2004

• #2

fuel pump out the door....

 

Black331Stang

Active Member

Apr 29, 2003

1,485

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36

Long Island, NY

May 19, 2004

#3

• May 19, 2004

• #3

damnn...car runs like a beast down low tho...pulls liek hell right up til that spot

 

blkstangman88

New Member

Apr 6, 2004

646

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0

May 19, 2004

#4

• May 19, 2004

• #4

fuel filter clogged? fuel pump could be going out, cuz it cant keep the pressure up. if the timeings to far advanced it will ping like no other when u give it major gas, at least thats what mine did, it never just cut out.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

33

129

May 19, 2004

#5

• May 19, 2004

• #5

stick a pressure gauge on and see how your pressure is when revving higher up. if low, it could be the FP, filter, other restriction, regulator, etc.
any codes?
see if the TPS has a dead spot.

good luck.

 

Black331Stang

Active Member

Apr 29, 2003

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36

Long Island, NY

May 20, 2004

#6

• May 20, 2004

• #6

ill toss in a new fuel filter today. any certain kinds u suggest to stay AWAY from? fram? etc.

 

Black331Stang

Active Member

Apr 29, 2003

1,485

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36

Long Island, NY

May 20, 2004

#7

• May 20, 2004

• #7

fuel filter no difference. i guess if its the fuel pump itll have to stay like that alll summer caus ei doing a new motor this winter and im not gonna wate time. i just wanted it as a cruiser this summer anyway. maybe its timing, we'll find out saturday cause the way i threw my dist. back in and set it was alllll LUCK.

one question: if i throw a 255 HP fuel pump in it now on a somewhat stock motor, will the injectors and stuff regulate the flow? or get a AFPR and itll be ok? caus ei am gonna need a 255 for the new motor and figures i could do it now.

 

9

9150ho

New Member

Mar 20, 2004

83

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May 20, 2004

#8

• May 20, 2004

• #8

i say you will be fine with the 255, the fuel pump just presses the fuel to the fuel pressure regulator, after that the regulator is what allows the fuel to go to the injectors.