rxseven07

okay, ive got a 84 gsl-se with a 45doce weber on it. just recently i was driving down the interstate when i was trying to top out 4th gear, at about 5k it started sputtering and bucking like it wasnt getting any fuel.. so i was like okay my fuel pressure regulator sucks anyway, so i buy one, put it on. NOTHING!!! so im like hey! maybe my cat is clogged! so i take the BACk cat off and gut it out to nothing. so i drive home, and it does it again! but this time in 2nd gear! but if i barely touch the gas pedal, like so im not mashing on it, it drives fine, but other than that if i mash the pedal, it wants to bog out like its not getting any fuel, so i bought a new fuel pump. put it on tonite! and nothing! gawd! what is it?

BMS2004

how about the fuel filter?

rxseven07

but could a fuel filter just BOOM! go out? and restrict me after 3k? cause thats what its doin... after 3 k its sucking ***! im so mad...

Rotor13B

Well ask yourself this question, How long have I owned this car and when was the last time I replaced the fuel filter.

rxseven07

owned it for a year, put the fuel filter on like in april...

BMS2004

well its the cheapest out of all you've already replaced. It will also narrow it down and look at it on the bright side if thats not it, something else you don't have to worry about down the road

rxseven07

true, but what do i look at next? after i replace this thing now what?

BMS2004

I wish I could help ya but don't know much about the sidedrafts. only advice I can offer from here is check for obvious things like vacuum leaks and stuff. if it does it when in neutral have someone sit in car and rev it and look for anything odd that could lead you to the problem.

Rotor13B

Check your fuel inlet screen on your carb.

Fire85GSLSE

iTrader: (29)

Yes! Under hard throttle it could be sucking a big chunk of trash. When you let off some it falls down, then you hit it again and the chunck gets sucked back up.
And besides it never hurts to change that filter!

Might be a vaccum leak also.
If you think it is the ehaust unbolt it at the header or manifold and run it that way.
Never gut a factory cat! They are to hard to come buy.

rxseven07

hmmm, im going to change that soon, but any other possibilities that could have occoured? just need some heads up.

RotaryAXer

iTrader: (4)

Ignition?

Cap, Rotor, Plugs, Wires?

It may be getting fuel just fine but no spark to ignite it.

Simple stuff first.

vipernicus42

iTrader: (4)

Fuel Pump!

You have a regulator, so I dont' know what kind of pump you're running or when it got installed, but that could do it.

Did you get the carb tuned or just slap it on?

Jon

rxseven07

i just replaced the fuel pump last night.. along with a regulator running at 5 psi.. still no change at all

eViLjAy

what kind of pump did you drop in? Im guessing you didnt put in a stock pump because they suck even on a stock engine as i have recently learned.

rxseven07

A Mr Gasket, 9 Psi, With 4.5 Psi Fuel Regulator.... Im So Stumped

rxseven07

Bump

rxseven07

looked into my barrels while it was running, and i seen that the left side ( looking form drivers side) is the only one with gas dripping on it, so i give it gas and still only the left side, so im guessing that this is clogged... how do i go about un clogging it? any special ways besides re-building the bitch>?

Aviator 902S

That filter replaced in April could very well be clogged. Old tanks contain sediment that tends to get sloshed around and then sucked into the system. And the symptoms often include bogging down (or even stalling out) at higher rpms.

Being the quickest and cheapest fix I'd start there first. If that doesn't help THEN go to step 2.

rxseven07

fixed it, found out that i had a screw loose on my carb, free to fix, but spent 120$ to find out what the problem was..