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P0301 Cylinder 1 Misfire


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#16 stef123

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Posted 04 June 2014 - 09:09 PM

Hope it's not a burnt valve.. An injector would be a better answer. You can pick up a set of them cheap enough

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#17 nazsky786

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Posted 05 June 2014 - 06:19 PM

Ok ignition system working all good, fuel injectors work all good. All that left is compression and most likely I will have a prob there.

#18 stef123

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Posted 05 June 2014 - 07:11 PM

Sorry if I've missed it, you have checked that cylinder 1 spark plug is sparking?

#19 nazsky786

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Posted 05 June 2014 - 07:35 PM

Yh is sparks. I lifted it a bit to hear and you can hear it. But sound weaker then the other 3 but the ht lead I tested works and so does the coil pack.

#20 nazsky786

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Posted 06 June 2014 - 04:14 PM

Ok cylinder 1 has failed the compression test only having 50 compared to 120 on the other 3. So we are talking a big problem .

#21 mixmasterlooney

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Posted 06 June 2014 - 08:05 PM

Oh boy that is a big problem

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#22 nazsky786

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Posted 06 June 2014 - 08:16 PM

I know. No I have to track down why it's losing compression.

#23 stef123

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Posted 07 June 2014 - 01:45 PM

Have you got a compression tester now? Put a bit oil in and try again, any improvement will indicate rings. If there is no change, it's probably a valve.

#24 nazsky786

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Posted 07 June 2014 - 01:46 PM

Ok. I tried it dry.

#25 stef123

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Posted 07 June 2014 - 01:49 PM

Oo err haha

#26 nazsky786

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Posted 07 June 2014 - 01:52 PM

That's just wrong. How much oil should I put in the cylinder?

#27 stef123

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Posted 07 June 2014 - 02:17 PM

That's just wrong. How much oil should I put in the cylinder?


One or two tablespoons of oil will be fine.

#28 nazsky786

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Posted 07 June 2014 - 03:43 PM

Piston rings

#29 nazsky786

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Posted 07 June 2014 - 03:45 PM

With oil they all go to 120 psi.

#30 artscot79

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Posted 07 June 2014 - 04:10 PM

Sounds like it needs a new piston ring ide just do all of them at once though

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