Number one cylinder misfiring.

Question 1

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1answer

1997 Honda civic misfire

have you performed a compression test?a cylinder with low or no compression will cause a misfire

Aug 20, 2012 • Cars & Trucks

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2000 GMC Sierra w/4.3 misfire on #2,4 cylinders

If it were low fuel pressure misfire , it wouldn't be cylinder specific misfire #2 , 4 it would be P0300 random misfire . I would think fuel injector's too . When hot they could be breaking down electrically , more resistance . If they tested electrically with a lab scope they would know for sure . Misfire from sticking fuel injector no fuel misfire

Mar 26, 2017 • 2000 GMC Sierra

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1996 ford full size bronco, 302 engine, starts and runs fine, under power it bucks and misses and has no power. let off gas and is ok again. A test shows a misfire on the #4 cylinder. The plugs, wires and...

Is this a 4.9L engine? An inline 6? My database doesn't show a 4.9L in that model year. It does show that engine in 95.
Did you visually check for spark at number 4 cylinder?
For 95-- 4.9L--fuel pressure--50--60 psi. Use a gage and check proper fuel pressure. Also, see if fuel pressure will hold for a bit with everything off.
Fuel--spark--compression. Some ford makes and models, ford can disable the fuel injector, if misfire is detected. I only mention this because, swapping injectors may not be conclusive? You can check for fuel injector pulse, anyway.
How long since over-all tune-up? You did get a new fuel filter, if inline filter, correct?

Jul 28, 2017 • 1996 Ford Bronco

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2answers

My Mom's Acura is gutless! The code reader shows #5 misfire. I cleared the code and it did not return. I changed the fuel filter, pulled the plugs and preformed a compression check all ok...although a...

O2 SENSORS ,the injecter or the computer has went bad.

Jul 30, 2010 • 1996 Acura TL Series

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3answers

Check engine light came on the computer said misfire on number 2 and number 7. I installed new plugs and wires. The check engine light went off, but it still seems to be missing and idling rough. When you...

replace the cap,and rotor,if this does not help,use a good fuel cleaner,like lucas,and heet together for cleaning and moister.You may have clogged injectors,also check the fuel filter,if there is not enough fuel pressure it will do this also.

Mar 26, 2010 • 1999 Dodge Ram

4helpful

3answers

2003 kia # 3 misfire/ runs rough, replaced plugs/ replaced 2 fuel injectors/ran compression test by disconnecting fuel pump. no abnormal sounds w/ cranking... swapped coil packs.. misfire code always # 3...

Replace the coil for number 3 cylinder.

Nov 11, 2009 • 2000 Kia Sportage

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1answer

Have a 1999 Toyota Tacoma with a 3.4. Vehiclw was brought in 4 pinging under acceleration. Check engine light was on with a TPS code. Upon diag we found the plugs very worn. 140K on vehicle so we did a...

Most likely I a would suspect the fuel rail had moisture in it. If you checked emissions it would most likely show no HC and alot of 02 and no CO. If it does show alot of HC then I would suspect sticking valves intermittantly . The pinging really points to no fuel issue tho. If you pull the injector connector off and no change then I would remove the fuel rail and inspect. Also make sure the wires are in the correct locations. It easy to get them wrong.

Sep 03, 2009 • Toyota Tacoma Cars & Trucks

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4answers

5.3 L Missing and Rough Idle Intermittently

i have a 2001 chevy z-71 5.3L. I keep getting a random/multiple misfire code for cylinder 1 . I have replaced plugs, wires, coil pack(only on #1 cylinder)., and fuel pump. I still keep getting the cylinder 1 misfire code. I put truck on a scanner and watched the cylinders. # 1 misfires at idle but quickly stops misfiring at around 1000 rpms. you can here the engine miss at idle but truck runs great on road . anyone else ever had this problem?

May 05, 2009 • 1999 Chevrolet Silverado 1500

2helpful

3answers

1998 Chevy s10 4 cylinder running rough

One thing to check is the fuel pressure regulator.
If the diaphram is leaking it will cause gas to be pulled into the vacuum system causing lots of white smoke and extreme rough running.

Mar 03, 2009 • 1998 Chevrolet Cavalier

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2answers

98 chevy 1500 4.3L vortec misfire problem

These have a real problem with the distributor caps, i would try that

Feb 18, 2009 • 1998 Chevrolet C1500

Question 2

Jonah Oneal

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Posted on Jul 10, 2010

Jonah Oneal

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DIRTY STOPPED UP FUEL INJECTOR OR FAULTY FUEL INJECTOR.

Answer 2

Anonymous

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Posted on Jul 10, 2010

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Check and replace your timing belt, although it is probably not the culprit, I have seen a tooth missing from a worn timing belt cause misfiring.

It is probably the Crankshaft Position Sensor, or the Camshaft Position Sensor causing the misfire.

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newt1959 Jul 10, 2010

Thanks for your advice. Is the camshaft position sensor located in the distributor? Where is the crankshaft postion sensor located and is it very difficult to replace?
Thanks
Anonymous Jul 10, 2010

The Camshaft position sensor is located in the distributor. The crankshaft position sensor is somewhere else on the engine. If you can get a hold of a Haynes manual for your pickup, it will show you the location, as well as the proper test and values for this sensor. Good luck!

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Number one cylinder misfiring.

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Jonah Oneal

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2000 GMC Sierra w/4.3 misfire on #2,4 cylinders

1996 ford full size bronco, 302 engine, starts and runs fine, under power it bucks and misses and has no power. let off gas and is ok again. A test shows a misfire on the #4 cylinder. The plugs, wires and...

My Mom's Acura is gutless! The code reader shows #5 misfire. I cleared the code and it did not return. I changed the fuel filter, pulled the plugs and preformed a compression check all ok...although a...

Check engine light came on the computer said misfire on number 2 and number 7. I installed new plugs and wires. The check engine light went off, but it still seems to be missing and idling rough. When you...

2003 kia # 3 misfire/ runs rough, replaced plugs/ replaced 2 fuel injectors/ran compression test by disconnecting fuel pump. no abnormal sounds w/ cranking... swapped coil packs.. misfire code always # 3...

Have a 1999 Toyota Tacoma with a 3.4. Vehiclw was brought in 4 pinging under acceleration. Check engine light was on with a TPS code. Upon diag we found the plugs very worn. 140K on vehicle so we did a...

5.3 L Missing and Rough Idle Intermittently

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98 chevy 1500 4.3L vortec misfire problem

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Number one cylinder misfiring.

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Jonah Oneal

Anonymous

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Related Questions:

1997 Honda civic misfire

2000 GMC Sierra w/4.3 misfire on #2,4 cylinders

1996 ford full size bronco, 302 engine, starts and runs fine, under power it bucks and misses and has no power. let off gas and is ok again. A test shows a misfire on the #4 cylinder. The plugs, wires and...

My Mom's Acura is gutless! The code reader shows #5 misfire. I cleared the code and it did not return. I changed the fuel filter, pulled the plugs and preformed a compression check all ok...although a...

Check engine light came on the computer said misfire on number 2 and number 7. I installed new plugs and wires. The check engine light went off, but it still seems to be missing and idling rough. When you...

2003 kia # 3 misfire/ runs rough, replaced plugs/ replaced 2 fuel injectors/ran compression test by disconnecting fuel pump. no abnormal sounds w/ cranking... swapped coil packs.. misfire code always # 3...

Have a 1999 Toyota Tacoma with a 3.4. Vehiclw was brought in 4 pinging under acceleration. Check engine light was on with a TPS code. Upon diag we found the plugs very worn. 140K on vehicle so we did a...

5.3 L Missing and Rough Idle Intermittently

1998 Chevy s10 4 cylinder running rough

98 chevy 1500 4.3L vortec misfire problem

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