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My Skyline Has Lost All Power!

nakuma

By nakuma,
in Engines & Forced Induction

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nakuma Enthusiast

nakuma

Posted
Posted

Hey guys,

I bought this car from a member about a month ago, and up until yesterday it ran perfectly fine.

I noticed the first problem yesterday when I drove it in the morning, just a single loss of all power for about 1/4 of a second. It didn't do it again, so I figured it wasn't anything bad.

Then today, after filling it with a full tank of BP Ultimate, I drove it about 10km to a new self car wash. I washed only the body (bonnet down) then coming home down the free way I noticed that between 2.5k - 3.5k revs the power was alot less than normal.

About 5km from home it started spluttering and misfiring and blowing black smoke. I pulled over, let it cool and tried driving it again. This time it would drive like normal at low rpm when there was about -0.5bar of boost, but as soon as I accelerated a little more and the turbo started to spool the power would cut out and it would run very sluggish again.

I limped the car to just around the corner from my house and it wouldn't even pull itself with the engine idling.

The car would rev fine (but surge while idling) in neutral or with the clutch in, but as soon as I engaged the cluth and began to rev, the car would clonk out.

The problem would temporary subside when car was left to cool for 30 mins but it would still run very rough, though I only drove it around my property, so I didn't just a chance to test the engine under boost.

I've read similar problems on here and thought it could be one or more of many things:

Bad fuel,

Bad AFM,

Bad o2 sensor (wouldn't cause problems this bad would it?)

Some gasket or seal?

Any help would be greatly appreciated!

Thank you

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https://www.sau.com.au/forums/topic/286279-my-skyline-has-lost-all-power/
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nakuma Enthusiast

nakuma

Posted
  • Author
Posted
check your cooler pipes for splits

As in radiator pipes?

I should also mention, the car has a front mounted intercooler and a pod air filter in its own little box. Which is fairly common apparently.

FLN75S Mentor

FLN75S

Posted
Posted

It wont be the O2 sensor as this does nothing on exceleration so you can rule that out.

You should look at all intercooler hoses and any vacum lines in the engine bay to ensure they are sealing and there is no leak. for instance a loose intercooler pipe would display the symptons you are describing though it is a bit strange it is intermitent but you never now it could only be occuring once it gets hotter.

Try cleaning the AFM this can cause the the symptons also but in the casses i have seen it affects idle too. You can test if its the AFM by disconecting it when the car is idling to see if the idle changes at all and becomes smoother but if it is idling fine this test wont help.

Also the other very commen problem is coil packs on my R33 they pretty much shat themselves almost instantly till the point where like you said it wont even move on idle.

If you try searching there is plenty of problems like theses that might help you diagnose the problem like plug gaps etc also is your car standard?

r34japcars Enthusiast

r34japcars

Posted
Posted
It wont be the O2 sensor as this does nothing on exceleration so you can rule that out.

You should look at all intercooler hoses and any vacum lines in the engine bay to ensure they are sealing and there is no leak. for instance a loose intercooler pipe would display the symptons you are describing though it is a bit strange it is intermitent but you never now it could only be occuring once it gets hotter.

Try cleaning the AFM this can cause the the symptons also but in the casses i have seen it affects idle too. You can test if its the AFM by disconecting it when the car is idling to see if the idle changes at all and becomes smoother but if it is idling fine this test wont help.

Also the other very commen problem is coil packs on my R33 they pretty much shat themselves almost instantly till the point where like you said it wont even move on idle.

If you try searching there is plenty of problems like theses that might help you diagnose the problem like plug gaps etc also is your car standard?

post up a pic of your front mount cooler set up !

also i recently had the same problem and it ended up being my coilpacks

could also be a split in your cooling pipeing if your cas is spooling but not boosting

FLN75S Mentor

FLN75S

Posted
Posted (edited)

These is the cooling pro front mount from just jap i had on my 33 the one on my 34 is a greddy.

and the 2nd photo is the one we installed on my mates 34 came out pretty good i think.

post-54017-1251930674_thumb.jpg

post-54017-1251930706_thumb.jpg

Edited by FLN75S
TonyStarks Collaborator

TonyStarks

Posted
Posted (edited)

I have the 'EXACT SAME PROBLEM'

although, i've checking my intercooler piping and all seems to be ok...

its an rb20det with a r33 stock turbo on it (not sure if its been tuned to have this turbo on it - could this be the problem???)

this problem is driving me insane

thanks in advance

Edited by TonyStarks
joeyjoejoejuniorshabadoo Grand Master

joeyjoejoejuniorshabadoo

Posted
Posted

if its misfiring at and there is some black smoke your plugs can be fouled..... replace them with some BCPR7ES gapped to 0.8

its a good place to start, and you probably need to change them anyway

TonyStarks Collaborator

TonyStarks

Posted
Posted
if its misfiring at and there is some black smoke your plugs can be fouled..... replace them with some BCPR7ES gapped to 0.8

its a good place to start, and you probably need to change them anyway

Nah they have recently been changed. I think it might possibly be the cooler piping. Seems to just lose all power like there is a leak somewhere. I'll have another look..

Thanks.

  • 7 months later...
nakuma Enthusiast

nakuma

Posted
  • Author
Posted

Sorry to bring up an old post, but just for anyone else having the same problem; it was just a hose clamp that was too big for the intercooler pipe. Refitted the pipes, smaller clamp and hasn't popped off again since.

  • 1 year later...

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