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Just Had My R33 Tuned,but Now Its Misfiring Quite Bad ( Yellow Jacket Coil Packs)

deprived777

By deprived777,
in Engines & Forced Induction

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Ben C34
Ben C34

Write "f**k you"

GTSBoy
GTSBoy

To be fair......Yellowjackets have their place. It's just that it's the bin!

tridentt150v
tridentt150v

I use the pedestal vice in my shed, but anything will do it, then squeeze a feeler gauge in and see how you go. Basic feeler gauges are cheap, tools are minimal, so no excuses. And learn as you go..

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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

I run 23psi with splitfires and 0.8mm gap. Good times :)

They will do till they break

I find they're ok on the dyno whilst I'm tuning, great for street use.. as soon as I hit the track and do a few laps.. bamm misfire city!

But at 0.5mm it's tits.. no misfires at all!!!

  • Like 1
deprived777 Enthusiast

deprived777

Posted
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i got a reply from the guy on ebay that sold me that coilpacks:

The coils are brand new too though.
You need to confirm there are no other underlying issues with the car, such as:

- Ensure that the coils are mounted and plugged in properly and the rubber boots are seated correctly and the springs are making good contact with the spark plugs. (This is the most common cause for a misfiring coil pack).
- Check that the coil wiring loom isn’t old and brittle or faulty.
- Check the CAS (Crank Angle Sensor) as it may be faulty.
- Check the TPS (Throttle Position Sensor) as it may be faulty.
- Check the AFM (Air Flow Meter) / MAF (Mass Air Flow) meter as it may be faulty.
- Even the ECU settings may affect how the coils operate. Please ensure the ECU you are using does not need to be retuned or reset to accommodate the new coil packs.

now i know the coil packs are definitely on properly,wiring loom is good, but not sure on the other things but i would assume that would of been checked over while tuning.

So what do i say in reply ?

GTSBoy Grand Master

GTSBoy

Posted
Posted

Well, this is why your chances of getting a refund on these coils is a bit slim. The term is "caveat emptor". Not doing your research on the suitability of a product before buying it is a mistake. When the product gets installed into a system where the product itself could be faulty, or any of a dozen other things could be faulty, then convincing the seller that the product is at fault is a difficult task.

We all pretty much know that they are going to be at fault, regardless of the possibility of other causes. You either run through and do every one of the checks that that seller asks you to, and then tell him the results, or you tell him a porky, say that you have done the tests, and have even swapped out the coils with a friend's Splitfires/new OEM coils and it runs properly with the other coils in it. The end result of doing the former is that you might still not convince him or yourself. The end result of telling the fib is that you might get him to agree to take the coils back and all will be right with the world.

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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Typical BS...

just plug up a set of OEMs or Splitfires and your misfire will go away.. that proves straight away the coils are shit and nothing else is stuffed.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Yellow Jackets belong in the bin

They're like Dick Smith shares that were heavily inflated... Buy today, then sell 80% less tomorrow.. wait there's a trading halt.. so bin it is lol

  • Like 1
Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

a good read.. with data to back it up :)

http://www.sau.com.au/forums/topic/421392-dont-be-fooled-into-buying-cheap-coil-packs/

GTRPSI Mentor

GTRPSI

Posted
Posted

If bought on ebay my advice is to test with a known working set of coils and if the issue goes away let him know, if he does not play ball, start a ebay/paypal dispute....when that fails go to consumer affairs.

Once consumer affairs gets involved he will have a headache at hand, 9 out of 10 times they side with the consumer.

I know because i had a customer buy a Exedy clutch kit, he dropped the clutch cover while fitting it onto the ground (bent corner of pressure plate cover with concrete dust still on it) and consumer affairs still said its my problem...eventually exedy agreed to take it back stating that from experience consumer affairs generally finds against the supplier and manufacturer regardless and its not worth their tech team and my time attending mediation meetings, and they already have washed into the price for these things to happen.

deprived777 Enthusiast

deprived777

Posted
  • Author
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i think my best bet is to email trent and ask for some help if he's got time.im sure all of that stuff would of been checked while tuning ?

if i had other coils to try i would do it right now and im 99% positive there would be no misfire.

tomorrow i'll be taking out the plugs and ill take it to someone to gap them properly for me and see what happens

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

i think my best bet is to email trent and ask for some help if he's got time.im sure all of that stuff would of been checked while tuning ?

if i had other coils to try i would do it right now and im 99% positive there would be no misfire.

tomorrow i'll be taking out the plugs and ill take it to someone to gap them properly for me and see what happens

gap them yourself bruh!

if they're copper, just slot in a feeler gauge and tap the tip with a small meta object..

I'm a lazy prick, so I just bang mine against the radiator support.. works a treat.

  • Like 1
tridentt150v Grand Master

tridentt150v

Posted
Posted

I use the pedestal vice in my shed, but anything will do it, then squeeze a feeler gauge in and see how you go. Basic feeler gauges are cheap, tools are minimal, so no excuses. And learn as you go.....

  • Like 2
Trex Grand Master

Trex

Posted
Posted

dont get me started on YJ's and performance China Racing wise lol. I think a few of you saw the shit storm on some of the products I and a few others had bought which do not fit.

Trex Grand Master

Trex

Posted
Posted

alright alright lol i'll get a feeler gauge tomorrow. i guess its something i do need to learn for myself :P

its extremely easy mate, and a good tool to have. You need to check each plug when buying new, as always 2/6 plugs i have bought have been out by a least .5-1.0

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