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Turbo Hestiation

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By SS-,
in Engines & Forced Induction

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SS- Proficient

SS-

Posted
Posted

So i was driving along

and all of a sudden my turbo was hesitating to hit boost and i could feel it under my foot the throttle was a lilttle bit shakey

this happens at about 4.5 revs car is stock its like the turbo is lagging? im not to sure what to do?

any advice would be appreciated

car is R32

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SS- Proficient

SS-

Posted
  • Author
Posted

I see

well umms

when I put my foot down it goes to about 3000 Revs then it starts to struggle to get to 4000 the. At 4000 it will jerk and rev up to 5000? It's

and it's stuggle real hard I guess when I try and hit boost it's not

comfortable :(

thanks

Cre8toR Explorer

Cre8toR

Posted
Posted

Mate, Did a quick search for ya and found this.

Misfire under boost thread

http://www.skylinesaustralia.com/forums/in...?showtopic=1456

Anyway, I’ll post here so that it’s in one thread

Most common cause for the RB25det misfire/stutter/what ever you want to call it, at the 5000 – 5500rpm range is that it is at it’s maximum load.

This causes any small problems in the electrical system to show it’s head.

Things you can do on the cheap or even free are as follows:

1.) take out your coil packs and tape them up with electrical tape. Use quality tape, not the 6 for $2 type.

I did 3 tight layers.

When you take them out, you will see that from the actual COIL down towards the spark plug is a rubber boot.

I started at the base of the rubber boot (spark plug end) and wrapped the tape tightly all the way up to the coil and back down and back up. Each rotation goes HALF over the last one.

So 3 layers.. up, down, back up.

This prevents any hair line cracks that may be there from ARCING out any of the spark.

2.) spark plugs. If they are old, replace them with NGK BCPR6ES-8 (if they don’t have the -8’s you can also use the -11’s but will have to re-gap them)

Make sure they are gapped down to 0.8mm (you will need a feeler tool if you don’t already have one – they cost about $30 from what I can remember)

If your plugs are new or newish (I’d say spark plugs are only good for about 20,000kms) make sure they are gapped to 0.8mm.

Put the spark plugs in and tighten properly, put the newly taped coil packs back in.

3.) Take off your AFM (Air flow meter – it is bolted to your air filter box or pod filter if you have one of those)

Get a can of degreaser. Spray the INSIDE of the unit.. you will see a little knob in there with wires… make sure you spray them good.

Now rinse out under the tap (not too high pressure).

Repeat the above degreaser and wash step if not totally clean.

Once you rinse it, you will need to dry it.

I used a hair dryer on it till it was completely dry.

Put it back on your car and plug it all in.

Good to go.

GTScotT Grand Master

GTScotT

Posted
Posted

MY VTEC FELL OFF!! I knew it would eventually find its way to SAU, MY TURBO FELL OFF!!

Sorry mate had to do it..

In reality its probably nothing to do with the turbo, try to troubleshoot the electrics as stated above and follow the FSM diagnosis methods :)

Hanaldo Grand Master

Hanaldo

Posted
Posted

Lol sorry just stressing I mean was Tod tto use 0.8 but repconony had 11

so wondering if the gap would

make a big iffrence?

Who taught you to use a keyboard?

0.8 gap would be ideal, if you got coppers then just take them out and gap them down.

trick Proficient

trick

Posted
Posted

Lol sorry just stressing I mean was Tod tto use 0.8 but repconony had 11

so wondering if the gap would

make a big iffrence?

gap makes a huge differance.

id take the plugs out and re-gap them.

also check your intercooler pipes for loose clamps or split pipes, could also be your problem.

or a basic vacuum hose has come of or split

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