Can a leaky injector cause occasional backfiring?

Pokageek

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#1

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?

 

Adam95GT

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#2

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i would assume so considering you would have extra fuel sitting around... when my 02 sensor wennt bad my car backfired because it was dumping fuel... i guess it depends on how much its leaking... you have any codes???

 

Pokageek

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Thanks. No, I don't have codes but I know one was leaking because when I #2plug, it had fuel on it one time. It only backfired once and I thought someone was shooting at me!! Hahah! But I can hear a slight pop like sound that is like it wants to backfire occasionally. If I leave it this way will it hurt anything?

 

HISSIN50

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#4

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It would depend upon how bad it is.

Remember that in the old days, cars were not so prude with the fuel delivery - all cylinders were being hosed down with extra fuel when not absolutely needed.

You could pull the injector and have a shop check it out, or do your own test (connect regulated air to the injector, set it at 40 PSIG and put the pintle-end into a cup of water with a dash of soap. When the air is flowing, if the injector leaks you'll get bubbles.

Good luck.

 

The Green GT

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HISSIN50 said:

connect regulated air to the injector, set it at 40 PSIG and put the pintle-end into a cup of water with a dash of soap. When the air is flowing, if the injector leaks you'll get bubbles.

Good luck.

Click to expand...

Wouldnt it make bubbles w/o soap too?

 

Adam95GT

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just replace it injectors can be found cheap... if you know what one it is... might as well..

 

HISSIN50

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The Green GT said:

Wouldnt it make bubbles w/o soap too?

Click to expand...

The soap makes it easier to see. It should work without soap too.

 

Pokageek

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Ok. Thanks guys.

 

mo_dingo

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#9

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Adam95GT said:

just replace it injectors can be found cheap... if you know what one it is... might as well..

Click to expand...

Just my personal experience, but I bought the cheaper 30's from summit (frpp) and one leaked like a mofo. I bought a replacement from accel and it's such a superior piece. Don't go cheap IMHO and get the accel's.

 

Adam95GT

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#10

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mo_dingo said:

Just my personal experience, but I bought the cheaper 30's from summit (frpp) and one leaked like a mofo. I bought a replacement from accel and it's such a superior piece. Don't go cheap IMHO and get the accel's.

Click to expand...

Im just saying they arnt that much $$$ to replace... Not to use a ****ty injector.