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How to wire a fuel injection 2007 5.3 in a 1987 body

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Call painless wiring they build plug and play harness's for all types of conversions

Posted on May 08, 2014

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My 93 Chevy truck 4.3 has a miss in it I replaced the plugs,wires ,distributor ,and rotor .and all of the filters ,and belts . And still have the same miss in it ? It starts perfect but idles rough .


you could have a burnt valve on the cylinder that's misfiring ! Do a compression test ! could have bad fuel injector ! What type of fuel injection does yours have TBI - throttle body injection , MFI - multiport fuel injection . Pull plug wires one at a time to see what cylinder is not contributing !

Apr 26, 2015 | Chevrolet Cars & Trucks

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Does a 1988 carborated Nissan pathfinder have a fuel pump regulator?


Are you sure it is a carburetor and not throttle body injection? They do look similar.
If it is a carburetor, there would not be a regulator. The fuel pump will either be a mechanical pump mounted on the engine, or a low volume electric pump in the gas line from gas tank to the engine.
If it is throttle body injection (TBI), yes, there is a fuel pressure regulator, probably located near the throttle body. It will have gas lines connected to it (one line will be a return line back to the gas tank) and a vacuum line. The fuel pressure on TBI systems is not as high as multi point injection, usually around 20 psi. You would have to check the specific pressure requirement for your pathfinder.

Take off the air cleaner cover and look at top of unit. A carburetor should have a choke plate right at top of the carb throat. However some Nissans by '88 had a carburetor without a choke-it used an enricher jet controlled by the ecu for added fuel when starting.. On a TBI, looking down at the unit where the air goes in, you will see one or two injectors with a wiring harness connected to them-each injector will have two wires connected to it.
If still unsure, check engine designation on the under hood label. Carbureted engines will have a s letter designation, injected engines will have letter i. To explain: my '87 Sentra is carbureted, so engine designation is E16s, some same engines were injected, so their designation is E16i.

Sep 29, 2013 | Cars & Trucks

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1994 CHEVROLET C1500 PICKUP 4.3L V6 vortek cranks no start backfiring thru the Throttle body fuel injection system. The Distributor has a small hairline crack under the reluctor wheel could this be the...


100 psi per cylinder is way too low--should be in the vicinity of 150-165 per cylinder
back firing indicates wrong firing order and as you have replaced the plugs etc check that you have the leads on the correct plugs in the correct order
the timing for the engine should be around the 10 degree btdc and not tdc

Mar 23, 2017 | Cars & Trucks

1 Answer

Can a conversion be possible from fuel injector to a carburetor on a polo 1.6i


If it is throttle body fuel injection, it may be possible to use a carb...but, why would anyone want to? While economy (miles per gallon) might be similar, fuel injection is superior in all respects. A carb has a gazillion moving mechanical parts that eventually wear out, get out of adjustment, or need replaced. Throttle body injection has a lot fewer parts, will be more stable and reliable over the long term.
That's my opinion. I don't know how much problems you might encounter with fixing the wiring, but if you have an engine computer, it will be all the more difficult, if not near impossible. Another consideration is that you would need a lower volume fuel pump for a carburetor.
My advice would be to forget it and fix the fuel injection system.

Nov 19, 2012 | Cars & Trucks

2 Answers

I have a 1990 chevy truck k1500. getting gas to throttle body but not to engine. new fuel pump new fuel filter rebuilt throttle body. do you have any ideas


Throttle body injection? replace the injectors. First check for power to them. 12 volts from one of the wires with key on

Sep 05, 2011 | 1990 Chevrolet K1500

3 Answers

How do I know if my truck has a carb or if it's fuel injection?


FUEL INJECTION THROTTLE BODY INJECTION SYSTEM HAS TWO ROUND FUEL INJECTORS ON TOP.CARBURETOR DONT HAVE FUEL INJECTORS.IT HAS CHOKE VALVE AND FUEL NOZZLE WHICH IS THE FUEL METERING SYSTEM.

Feb 04, 2011 | 1987 Nissan Pickup

1 Answer

Wont start,pour little fuel in throttle body runs 4 little, changed fuel filter,psi seems good off fuel pump


The injecters may be bad, or not getting power.Check wires to injecters @ throttle body to make sure they have not rubbed bare .

Mar 08, 2010 | 1985 Oldsmobile Ciera

1 Answer

I pass every test for smog except for the emissions (HC) part. The limits are 120 at 15mph and 95 at 25 mph. I'm at 155 and 160. I've replaced the catalytic converter, entire exhaust from tail pipe to...


Has anyone tried adjusting the fuel air mixture?

Based on what I am reading this is a gas engine and I am also assuming it is fuel injected. (Or does it have throttle body fuel injection?)

I suspect a case of dirty fuel injectors at the moment. They will need to be removed and cleaned.

If you have throttle body fuel injection then you will need the fuel air mixture adjusted.

If you respond can you let us know the "engine size" that is installed please. It would help us to help you in troubleshooting.

Thanks for using Fixya. Kelly.

Feb 08, 2010 | 1993 Chevrolet K2500

2 Answers

Does a 97 cavalier have a carborator or is it fuel injected?


this car is throttle body injected. so yes fuel injected

Feb 04, 2010 | 1997 Chevrolet Cavalier

2 Answers

Running rich think its a fuel regulator problem


need alot more info....is this multiport fuel injection or does it have the two injectors in throttle body......... is the check engine light on has any one pulled codes.. while engine is at an idle.. look in throttle body and look at the fuel being injected... they should be clean looking fans...they have problems with those injectors... if you see one that is dripping and appears to be dumping in to much fuel in intake check injector and injector orings....also where the wires to the injectors exit the round spacer the wires have known to be pinched grounding the injector causing excessive fuel flow let me know

Aug 31, 2009 | 1994 GMC Jimmy

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