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Misfire once warm? HELP!! 

 

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 Post subject: Misfire once warm? HELP!!
Posted: Mon Oct 31, 2011 2:08 pm 
Getting Side Ways
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Age: 32

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Ride: EF Futura DUH

Location: central coast
NSW, Australia

As some of you may be aware ive just completed a complete rebuild of the engine in my EF.
Today after driving it for say 20 minutes, it developed a severe miss causing a dramatic loss of power and severe vibrations.

I limped it home and started to check things.
Once cool it kicked over, no dramas and ran smoothly. Got 10-20 mins of driving in and the miss returned :? (is definitely when at operating temp)

So far I have:

Checked leads (made sure they had'nt come loose, inspected the boots and wires and even threw an old set on just in case)
Checked spark plugs (seemed clean with no damage)
Checked that all sensors were connected securely.
Inspected the rocker gear for damaged arms springs ect.
Checked fluid levels.
Checked for oil in coolant/coolant in oil.

I have replaced all elecs ON the engine with brand new items EXCEPT injectors.

Was thinking the MAP?

 

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1996 EF Futura factory manual
Fully rebuilt engine,Decked, Honed, Bored, Tolerences spot on, Wade 1673, Extractors, 2.5" zorst, 3" CAI, High flow filter, Exedy sports tuff clutch, Chiptorque tune.
Future Mods: A mortgage...

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 Post subject: Re: Misfire once warm? HELP!!
Posted: Mon Oct 31, 2011 2:20 pm 
Getting Side Ways
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id bet spark plugs mate

check fuel filter as well

map sensor wont make it misfire just make it run rich like mofo and blow black smoke

 

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NF Fairlane Ghia, Brand New Leather Interior, Wallnut All Through, 800W RMS JL Audio Sound System, Lowered King Springs And Monroe GT Shocks, Custom BA/GT Air Intake, Holley Highflow, Simmons B45's, Going To Be Supercharged At 9-12psi With Stage 4 Head And Cam With Pacemakers And 3" Exhaust

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 Post subject: Re: Misfire once warm? HELP!!
Posted: Mon Oct 31, 2011 2:57 pm 
Getting Side Ways
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Ride: EF Futura DUH

Location: central coast
NSW, Australia

Just fitted an old coil pack from the last engine. I will update shortly.

Fordsrule174 wrote:
id bet spark plugs mate

check fuel filter as well

map sensor wont make it misfire just make it run rich like mofo and blow black smoke


They looked fine once removed (Clean, unburnt and no cracks). But this will be the next thing for me if it continues.

 

_________________

1996 EF Futura factory manual
Fully rebuilt engine,Decked, Honed, Bored, Tolerences spot on, Wade 1673, Extractors, 2.5" zorst, 3" CAI, High flow filter, Exedy sports tuff clutch, Chiptorque tune.
Future Mods: A mortgage...

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 Post subject: Re: Misfire once warm? HELP!!
Posted: Mon Oct 31, 2011 3:29 pm 
Getting Side Ways
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Age: 32

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Ride: EF Futura DUH

Location: central coast
NSW, Australia

OK. It seems as though the problem has been rectified.
I dont believe it was the coil pack as when I was installing it the main connector it would'nt go on so apon inpection I noticed there was a red rubber seal on the harness plug and also in the coil pack connector :oops: .
So it was removed from one and it seems to have worked! :D :D

Thank christ for that!!!!

 

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1996 EF Futura factory manual
Fully rebuilt engine,Decked, Honed, Bored, Tolerences spot on, Wade 1673, Extractors, 2.5" zorst, 3" CAI, High flow filter, Exedy sports tuff clutch, Chiptorque tune.
Future Mods: A mortgage...

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 Post subject: Re: Misfire once warm? HELP!!
Posted: Sat Dec 24, 2011 3:12 pm 
Getting Side Ways
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Ride: Ba XR6 mk2 n/a

Location: sydney N/Beaches
NSW, Australia

Please explain miss firing and surging for us??
In detail

 

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 Post subject: Re: Misfire once warm? HELP!!
Posted: Sat Dec 24, 2011 6:49 pm 
Getting Side Ways
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Ride: S1 eb 5speed

Location: Coffs Harbour
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Was Gonna say coil pack, they have a habit of doing this, also get the same problem with a dizzy motor when the cap gets porous, when it heats up the humidity causes a miss.
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 Post subject: Re: Misfire once warm? HELP!!
Posted: Mon Dec 26, 2011 12:58 am 
Getting Side Ways
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Ride: Ba XR6 mk2 n/a

Location: sydney N/Beaches
NSW, Australia

What's a miss feel or sound like ?

 

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 Post subject: Re: Misfire once warm? HELP!!
Posted: Mon Dec 26, 2011 6:36 am 
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ba_xr6bw wrote:
What's a miss feel or sound like ?


If you get a good Miss, she should feel nice and firm but soft and spongy in the right places, tight with a little damp in the nether regions and as for sound, best ones are very quiet till you until you open them up :shock:
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 Post subject: Re: Misfire once warm? HELP!!
Posted: Mon Dec 26, 2011 8:35 am 
Getting Side Ways
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NSW, Australia

Harharhar.
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 Post subject: Re: Misfire once warm? HELP!!
Posted: Mon Dec 26, 2011 10:36 am 
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Pakrat wrote:
Harharhar.


Sounded like waht a Miss should feel like to me :D
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 Post subject: Re: Misfire once warm? HELP!!
Posted: Mon Dec 26, 2011 10:41 am 
Getting Side Ways
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Age: 26

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Ride: S1 eb 5speed

Location: Coffs Harbour
NSW, Australia

It's a perfect description of mine, but I got mates who's miss has the spongy parts all over and the wet parts show up when they start dribbling s**t.
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 Post subject: Re: Misfire once warm? HELP!!
Posted: Mon Dec 26, 2011 11:06 am 
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Ride: EF Fairmont

Location: Campbelltown
NSW, Australia

Pakrat wrote:
It's a perfect description of mine, but I got mates who's miss has the spongy parts all over and the wet parts show up when they start dribbling s**t.

:lol: :lol: :lol:
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 Post subject: Re: Misfire once warm? HELP!!
Posted: Mon Dec 26, 2011 7:55 pm 
Getting Side Ways
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Age: 32

Posts: 591

Joined: 28th May 2011

Gallery: 4 images

Ride: EF Futura DUH

Location: central coast
NSW, Australia

ba_xr6bw wrote:
What's a miss feel or sound like ?


In my case, it was a 95% loss of power and it could barely get out of its own way.

Was a scary thing after rebuilding the motor, there were many bad thoughts going through my head.

 

_________________

1996 EF Futura factory manual
Fully rebuilt engine,Decked, Honed, Bored, Tolerences spot on, Wade 1673, Extractors, 2.5" zorst, 3" CAI, High flow filter, Exedy sports tuff clutch, Chiptorque tune.
Future Mods: A mortgage...

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