Another Problem, #2 was well oiled up!!!

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Brett G

Guest
Went to change my plugs this morning as I've just had a boost upgrade and under high boost it was misfiring badly :cry: Anyway when I changed them #2 plug was totally oiled up and now I'm really worried :? The engine seems so sound and tight, it runs really well and idles well too, there is no sign of any problems! I can't see any smoke either but I'll get someone to have a look for me as I'm driving later.
I was wondering if this could just be where the cylinder was not firing under boost?? I would of thought it would have been burnt off when idling etc though?
Any ideas guys?

Cheers

Brett :cry:
 
J

jiw

Guest
i'd expect a bit of oil on pot the off pot if you where running on three but as this is only occuring when in high revs i cannot understand the oil, give it a good run out, jeff :wink:
 
K

kyepan

New Member
what plugs did you change to as if you go over a bar you should go one heat range colder.

You might also want to check that they are gapped correctly, even though you have no problems at idle and normal running, if the gap is too large it may have problems


there are many post about gapping plugs and which plugs to go for at what boost, the search function should find plenty for you.
 
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Brett G

Guest
Just went out again and its doing the same again so I'm affraid the cylinder is oiled up again :cry: Every time I put my foot down now even at standard or lower boost it misfires on a cylinder and runs on three until I come off boost and all is normal again!
Could it be a ring?
The spark plugs I got are NGK Iridium BKR9EIX and I didn't gap them :oops:
But why would only one of them fail again (prob #2)
I was going to have my unichip installed and set up by Powerstation but I don't know what to do now??? I just got a feeling its going to be expensive.... Again!
 
K

kyepan

New Member
yer i read your other post, the ones you have are heat range nine, i think VPulsar recommended range 8 to you. so it might just be the wrong plugs for the boost your running.

erm.. i'll try and find out what gap

"Get some feeler gauges and find out what gap you want (most people here are going for 0.7mm) the gap is measured from the electrode to the other thingy Rolling Eyes if its to big bang it on the floor until its closed up enough or prise it up a little if its to small."

you can get a set of the colder denso plugs from camberly auto factors for not much more than 20 quid... or you could turn your boost down put your old plugs back in and see if it all returns to normal.
 
pete-r

pete-r

New Member
ive got the same spark plugs ,running 1 bar ,and my car runs fine on that.i didnt gap them either ,i did speak to some specialists at a spark plug place and thats what theey recommended.
 
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Brett G

Guest
:cry: I just have a feeling that even if I change the plugs and re-gap them etc the problem will still be there. The oil level is very high so I'm going to drain that and maybe get some new leads. Does anyone know where's best to get the leads from?
 
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Brett G

Guest
I've looked at the plug and it was only the thread that was oiled up, the actual sparking points were ok :roll:

Booked it in to Powerstation next thursday to sort it and set up the unichip, I bet thats gonna be expensive :(
 
M

memski

Guest
Where abouts in London are you? Powerstation will fleece you mate :cry:
 
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Brett G

Guest
Heathrow.... Any suggetions?
I'm pretty sure its just residual oil that must've been sitting in the well, so I think the cylinder is ok :?
It must be electrical has anyone had anything similar? It was working brilliantly this morning with the new plugs with just a hint of a miss every now and then.
But now it goes to pull and then just sounds like a chopper! Feels like its totally failing/misfiring on one cylinder

Brett
 
M

memski

Guest
I'd get the leads in there before you trek up to PS. And personally wouldn't bother with the unichip.... but that's imho.
 
B

Brett G

Guest
Unichip's going in! I was quite impressed with Johns car and thats what He's running.... I think! :D Just hope this other problem can be sorted!
Where's the best place for leads?
ANYONE???
 
M

memski

Guest
Go to nissan for the leads. :p

why not
Click to expand...
I just don't like them. Imho if you're running a bar of boost (and I'm guessing Brett will be) then the stock ecu with an uprated fuel pump should be more than adequate to get a similar result for stock engine/turbo. Sure it might not be quite as good, but for the money spent you might as well spend a bit more and get a complete replacement ecu and finish the job properly :wink: (again not worth it for only a bar).
 
topcat

topcat

New Member
its possible u have 2 problems.. the misfire and the oil on plug. the oil on plug is probly the plug tube seal leaking..this sits under the rocker cover.. u will need to replace all 4 and the rockergasket..

the misfire could be a number of things.. start with basics..check plug type is correct and gap is correct also..
 
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Brett G

Guest
It / they seem to fail under high boost, so is it possible that the leads are fooked? Or is this not likely to be linked as I would have thought that they wouldn't be affected by how much pressure is in the cylinders?? And its not necessarily affected by rpm as I can prob rev it right the way up if i accelerate gently :roll: Please let me know if or how they could be a possible cause? (I'm hoping it could be them). As for the plugs, they were fine when I first put them in so I'm thinking its probably not them but I will gap them properly when i take the intercooler off again
Oh and when I say high boost I actually mean if I boost it at all! They fail when the engine is under load

Cheers for the advise guys

Brett :wink:
 
topcat

topcat

New Member
yes it is possible.. did u just pull the leads out..or give them a little twist as u pull? try a substitue set..or measure the resistance of the leads.

make sure u didnt disturb any vacuum hoses or oil breaters when u took the intercooler off.

other basics to check.. distributor cap, rotor arm.
 
B

Brett G

Guest
Sorry you probably replied before i edited the post :roll:
pretty sure no vacuum pipes or hoses were disturbed :wink:
 
daz

daz

New Member
why dont you just get it compression tested then u will know if its a ring or not if the plugs oiled up then the oil is coming from somewhere
 
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