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2007 500cc 4x4 auto cat.was running poorly. put in carb kit, new fuel and air filter and spark plug. replaced fuel pump as well. Still wants to cut out at the higher rpms in low gear.

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6ya6ya
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Posted on Jan 02, 2017

  • 8 Answers

SOURCE: Bronco 2

check if wires to pump are hot ,if not check fuses

Posted on May 23, 2008

  • 398 Answers

SOURCE: Poor fuel mileage

what kind of exhaust do you got, the converter actually may help get better mileage. scan egr for errors in emmisions, get the timing checked mabe running rich, check pcv valves,test knock sensor, 02 sensor( scan might not pick up) lemme know how it goes

Posted on Mar 07, 2009

  • 1 Answer

SOURCE: 82 corvette crossfire injection, engine

Please go to the crossfire injection forum to get some straight answers to the 82 corvette CFI system and how to troubleshoot it properly. There's a lot of misinformation given here, so much so, I don't know where to begin.

One thing is, the 82 corvette CFI does NOT have a MassAir Flow sensor system, it uses MAP and O2 mostly. The CTS sends a signal to the ECM telling it what the temp of the motor is and in turn the ECM controls the amount of fuel being dumped. On the older (orignal) CTS sensors, they have one wire and takes its ground from the threads. If any coorosion takes place, usually the CTS will report a cold engine and request lots of fuel.

To repair this issue, install one of the newer style CTS sensors that have two wires, one for signal and the other is ground.

Fuel pressure and vacuum leaks on any CFI motor play key roles. Set the FP to 14-15psi measured inbetween the TBs. The regulator is located on the rear TB and must be slightly moded to make it adjustable and can be done in a few minutes.

Posted on Mar 07, 2009

shop242
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SOURCE: 1979 f100 351w 4x4 c6 tranny new fuel pump,

Tranny is screwed,, Dont care if its new or not.. The Torque Converter is either Froze or something in the Tranny.. thanx

Posted on Mar 17, 2009

  • 123 Answers

SOURCE: 2000 corolla sluggish when accelerating, fine at higher RPMs

Try changing out your distributer cap and rotor button. Let me know if that solves your problem.


Thx

Posted on Aug 01, 2009

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2 Answers

1983 st90 f8a, suzuki carry van. it will start. but when i apply accelerator it will cut out. like it is starving fuel. i get fuel to the carb, but thats where im stuck.


A carburettor has an eccelerator pump which gives a small squirt of fuel into the venturi when depressing the gas pedal. it consists of either a diaphram or a small rubber cup (as in a car tyre pump) if this is worn or faulty it is most likely the cause of the problem and has to be replaced. This is normally included in a carburettor kit which can be purchased at most auto parts dealers. I suggest you get one and replace all the parts supplied in the kit. I am 90% certain this will solve your problem

Oct 29, 2015 | Suzuki Cars & Trucks

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1982 JEEP HESITATES WHILE DRIVING AND DIES


2 things. come to mind.
i check the distributor advance works to spec with my timing light (strobe)
if that is ok, its a carb issue.

carbs fail for many reasons, (mostly gummed up inside)
we clean them. that fixes them. (with a kit)
I only have this for symptoms, and is not good.
MAJOR HESITATION AND STALLING OCCURS
does the engine have full power up any hill wide open throttle
is the Hesitation only a short time then catches up.
The carb (not stated P/N or brand) has jets, the if gummed up
will cause lean running.
so will any power valve jet.
ever tune it up. new spark pats, rotor all the way to spark plugs.
bad spark , loves to fail under load, that is its , magic.
carb>
  1. low float bowl levels.
  2. low fuel pressure causing above,
  3. bad float valve , sticks closed and starts bowl of fuel, causing #1
  4. Gummed up jets.
  5. Gummed up emulsion tubes in carb body.
  6. Choke stuck on, causing flooding,
  7. Choke dead causing hard starts . (stuck open)
  8. power valve clogged.
  9. Highspeed accelerator pump bad, causing only sight hesitation.

my guess? based on 1 word "stall" its #1 to 3 or 6.
black spark plug tips would be #6

or if black sparks, the float valve is stuck open flooding engine and stalling.

we can go for days on carbs. but will not.

Mar 19, 2014 | Jeep Cherokee Cars & Trucks

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My 94 GMC Jimmy 4x4 vortec, is hard to start, cuts off when i make stops, have to put it in neutral when i am at lights and still have to give it gas then. already changed the distributor cap and rotor...


I recently had similar symptoms from my Kia Rio, hard to start, bad idle in gear, etc.
Ended up being the idle air control valve, you can try cleaning yours with carb cleaner and see if there's any difference.
A clogged fuel filter can produce the same symptoms too, that might be the easiest thing to start with, then it's just a process of elimination from there.

Sep 02, 2011 | 1994 GMC Jimmy

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I have been given an old Datsun 720 4x4 ute. I t has been sitting idle for some time and when it did run it was rough. I have replaced the carby as the old one is rusted up, but it wont run,unless you poor...


hi, take the fuel line off and turn it over, fuel? make sure you have a fire extinguisher there fuel pump and fuel filter a must, if it still wont run after that then stuck needle valve. Oreally sells a carb rebuild kit for I think. or junkyard cool truck, rare 4x4, keep it
jm

Aug 23, 2010 | Datsun 720 Cars & Trucks

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My 88 isuzu picup. How do I adjust the idle speed?


I just repaired my '94 and it had similiar problems. Too much fuel was flowing through the carb. Mileage dropped way off.

I rebuilt the carb but the real problem was a bent tang on the float. This resulted in the failure of the needle valve to close completely, regardless of the float level.

Nov 11, 2009 | 1994 Isuzu Pickup

1 Answer

1997 GMC K1500 4x4 5.7 ex.cab SFI injection system


Hey there boatright33,

A few things things immediately come to mind.

There may be a problem with the engine controller. You could check the ODBII onboard diagnostics. Auto part stores will usually do this for you at no cost.

When you pulled the ones that were/went bad, how did the filters look? Could there be particulate matter still in the tank causing them to fail.

I always put this one off until last. Check the injectors. Are they gummed up?

Let me know what you find out
Mike


Aug 12, 2008 | 1996 GMC Sierra

1 Answer

I have a 1989 chevy silverado 4x4 with a 350, it ran great for ever until now. It starts up, runs rough for a few seconds then just quits, it will do this 10 times in a row then start just fine and run...


Did the problem start when the fuel pump was replaced? It could be some kind of obstruction in the fuel line or a fuel filter acting up - needing replaced, or the filter on the fuel pump somehow didn't get installed correctly. Spend $20 and get a Haynes Repair Manual from Auto Zone to show you step by step instructions with pictures how to troubleshoot just about anything for your make and model.

Jul 05, 2008 | 1989 Chevrolet C1500

4 Answers

CANT FIGURE IT OUT


Is the fuel pump running? Take the gas cap off and put your ear by the filler. Now have someone turn the key to the on position (not all the way to start). You should hear the fuel pump run for about 3 seconds. If you don't hear the pump run, the most likely culprit is the fuel pump itself. Second possibility is the fuel pump relay.

May 21, 2008 | 1989 Ford Bronco II

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