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Extreemly Weird Problem

heyhey!

By heyhey!,
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heyhey! Rising Star

heyhey!

Posted
Posted (edited)

PROBLEM FIXED...for all those wondering timing belt jumped 4 teeth!!!!!!!!!!!!!.....yes i know i dont believe it either...but sure enough we took it apart and bam it was all out...put it back together and she is beautiful!!!!!!!!!!!!!!!1

hi guys

ive got an rb20det r32

it was non turbo auto and is now manual turbo...

everything was going fine...would fry the tyres without any trouble at all!

one day i was driving along and hit a massive bump in the road...

ever since the car has completely changed

its started to miss straight away.....throughout the whole rev range

idle is absolutely disgusting...just missing and rough as...and the worse problem is the car has 0! power....a charade would flog the pants off me...it drives and sounds EXACTLY like and naturally aspirated rb20..deep and throaty sound

BUT ALSO pings like nothing else from about 4k onwards

list of things we have tried

changed cas

changed ignitor

changed coilpacks

changed knock sensor

changed o2 sensor

changed ecu

changed afm

changed plugs

wiggled all wires on the car and it made not difference

inspected turbo

pulled exhaust off

tested fuel pressure

checked boost pressure is running 8psi which it should be

now a couple of weird things!

i retarded the timing as far a it could go...this stopped the pinging a little bit...and allowed the car to rev smoothly...but still is the slowest rb20det on this planet

the only thing we can think of now is that the timing belt jumped a tooth or something ridiculous

does anybody know anything else to try

symptoms again are

VERY slow

pinging

missing

very rough idle

sounds like an NA rb20

car is quieter now to i might add

Edited by heyhey!
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superspit Mentor

superspit

Posted
Posted
hi guys

ive got an rb20det r32

it was non turbo auto and is now manual turbo...

everything was going fine...would fry the tyres without any trouble at all!

one day i was driving along and hit a massive bump in the road...

ever since the car has completely changed

its started to miss straight away.....throughout the whole rev range

idle is absolutely disgusting...just missing and rough as...and the worse problem is the car has 0! power....a charade would flog the pants off me...it drives and sounds EXACTLY like and naturally aspirated rb20..deep and throaty sound

BUT ALSO pings like nothing else from about 4k onwards

list of things we have tried

changed cas

changed ignitor

changed coilpacks

changed knock sensor

changed o2 sensor

changed ecu

changed afm

changed plugs

wiggled all wires on the car and it made not difference

inspected turbo

pulled exhaust off

tested fuel pressure

checked boost pressure is running 8psi which it should be

now a couple of weird things!

i retarded the timing as far a it could go...this stopped the pinging a little bit...and allowed the car to rev smoothly...but still is the slowest rb20det on this planet

the only thing we can think of now is that the timing belt jumped a tooth or something ridiculous

does anybody know anything else to try

symptoms again are

VERY slow

pinging

missing

very rough idle

sounds like an NA rb20

car is quieter now to i might add

Hi...

where did you say that 'bump' in the road was??....I need my car to be a bit quieter!!! :teehee:

anyway, hope you find a result!!

Devils_Advocate21 Mentor

Devils_Advocate21

Posted
Posted

NA engines usually have a higher compression than turbo engines, id say get it looked at by a mechanic, it wouldnt hurt to have a compression and/or leakdown done on it at least this may give a little comfort as well.

Also there is a couple of things you could check, intercoolet piping and joiners.

Good luck with it

superspit Mentor

superspit

Posted
Posted
NA engines usually have a higher compression than turbo engines, id say get it looked at by a mechanic, it wouldnt hurt to have a compression and/or leakdown done on it at least this may give a little comfort as well.

Also there is a couple of things you could check, intercoolet piping and joiners.

Good luck with it

Hi DA21 !!

I'd like to know more about your car (if that's ok?)!!...sounds hot and interesting!!!

Superspit!

feyd182 Apprentice

feyd182

Posted
Posted

I'm having a similar problem, I checked the ecu codes and got #11, and #21, crank sensor, and ign. circuit. My engine is a RB20DE conversion to DET and my problem started very similar to yours. Check to see if you have any fouled plugs, my #6 cylinder is not firing at all although the coils and plugs, etc. are fine.

700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted
If it cracks between two pistons u wont lose any water or oil it will just have bad compression , u have tried just about every other problem just other thing to look at

Hello,

Just a few suggestions..might have been covered but hope I can be of some help

No noise from the fuel pump.?...could be on the way out.

Fuel filter could be blocked....how does she run at idol?

Could one of your injectors be cracked or become faulty after the knock?

if you have checked these...take it down to a workshop.

Cheers Tekin

heyhey! Rising Star

heyhey!

Posted
  • Author
Posted

hi guys keep the comments coming.....

ok possible it could be blown head gasket...might be somethign to look at last id say

fuel pump is making normal noises...fuel pressure was pretty good!

injectors...very likely i would say...its definatly possible some are clogged

what do people think regarding a timing belt jump???

  • 5 weeks later...

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