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Car Misfiring When Hitting Boost

soultz

By soultz,
in Engines & Forced Induction

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soultz Community Regular

soultz

Posted
Posted

Hey guys! This is my very first post on this forum, and I need your help!

I'm buying a car on Monday, I drove it today and it feels like its misfiring when boost kicks in...4-4500 rpm..it's only sometimes it does it as I went back to look at the car a second time and it didn't do it. So I was thinking a Chang of leads/spark plus/ spit fire coil packs are the problem??? My friend told me this is a normal problem most r33s have??

If someone could let me know ASAP before I buy the car on Monday that would be great!!

Thanks guys

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EniterasKamiplus Newbie

EniterasKamiplus

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Cowboy1600 Grand Master

Cowboy1600

Posted
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Why would you buy a car that is playing up?

Because you predict the fix will be easy?

My Stag had a misfire when I bought it. It caused a few minor headaches at first, but nothing major. I still haven't solved it, but I'm fairly sure it's the coilpacks.

soultz Community Regular

soultz

Posted
  • Author
Posted

Because you predict the fix will be easy?

My Stag had a misfire when I bought it. It caused a few minor headaches at first, but nothing major. I still haven't solved it, but I'm fairly sure it's the coilpacks.

exactly right. im predicting its hairline fractures in the coil packs, as ive read on here its a easy fix but id like to get a set of splitfire coils anyway. the car just had a service 3500 klms ago and hes got recipets that timing belt was changed and the other regular service duties were carried out....the car is great its just this little misfire problem. i took it for a test drive and told him when i got back. he said he knows it happens but only sometimes which is true as i took it for a drive again and it didnt do it...therefore he lowered the price, to compensate me for fixing the problem...

GH05T Grand Master

GH05T

Posted
Posted

i suggest u can be a bit of a hard ass to cover yourself.

IF i was buying it i would ask the buyer to solve the problem, if its plugs and simple things its weird that the buyer would not fix this himself to sell, thats just f**king lazy, i would suggest its something more, not major just something he cant be assed spending money on to sell.

if its coilpacks then make him replace them. if it fixes it then u pay for the parts but if it dosnt fix it then u dont want to buy.

soultz Community Regular

soultz

Posted
  • Author
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He has no clue of how to install anything , he gets he's local mechanic to do all the services for him, he just told me that it happens more often in the colder mornings, and he's never thrashed it to le it happen..

Dre678 Explorer

Dre678

Posted
Posted

Hey guys! This is my very first post on this forum, and I need your help!

I'm buying a car on Monday, I drove it today and it feels like its misfiring when boost kicks in...4-4500 rpm..it's only sometimes it does it as I went back to look at the car a second time and it didn't do it. So I was thinking a Chang of leads/spark plus/ spit fire coil packs are the problem??? My friend told me this is a normal problem most r33s have??

If someone could let me know ASAP before I buy the car on Monday that would be great!!

Thanks guys

Matt,

I bought my R33 with a similar problem. I did, however, have the car inspected before I had bought the car. He was 90% certain it was the coilpacks (which as you've found out, it a common problem).

The tacho was also faulty (again, a common problem)

So knowing that those things are wrong, and also knowing fixing both are very straight forward diy's, I got quotes from professionals to fix both, presented that to the seller and shook the f*ck out of the selling price ;)

Naturally any quotes from mechanics are going to be sky high when they quote factory parts! Haha

He accepts (as like your seller, he knew f*ck all about cars) because he thinks his car is terminally ill, and you make a killing - with extra money now ready for mods! Good luck.

soultz Community Regular

soultz

Posted
  • Author
Posted

Matt,

I bought my R33 with a similar problem. I did, however, have the car inspected before I had bought the car. He was 90% certain it was the coilpacks (which as you've found out, it a common problem).

The tacho was also faulty (again, a common problem)

So knowing that those things are wrong, and also knowing fixing both are very straight forward diy's, I got quotes from professionals to fix both, presented that to the seller and shook the f*ck out of the selling price ;)

Naturally any quotes from mechanics are going to be sky high when they quote factory parts! Haha

He accepts (as like your seller, he knew f*ck all about cars) because he thinks his car is terminally ill, and you make a killing - with extra money now ready for mods! Good luck.

EXACTLY my point ^^

i bought some silicone, the industrial grade 401 selley's stuff as i read on the forum that fixes it. is it worth taking and trying there before i buy it?

Cowboy1600 Grand Master

Cowboy1600

Posted
Posted

Well I have almost the exact same problems and have just ordered a set of YJs so I'll let you know how they go. Assuming I get them in the next day or two, they will be in by the weekend.

Cowboy1600 Grand Master

Cowboy1600

Posted
Posted

Just a quick reference, splitfire is the only correct fitting replacement, all the others only use 1 bolt and sit slightly angled as the bolt holes are wrong.

Have you considered that perhaps the ones which "only use 1 bolt and sit slightly angled" weren't the correct ones for an RB?

Cowboy1600 Grand Master

Cowboy1600

Posted
Posted

All 4 sets I bought were for an rb25neo, and 3 of them gave me my money back because of poor fitment quality. The 4th was splitfire.

Well, I'll let you know how the YJs go for me.

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