Jump to content
SAU Community

Rattle In The Engine Bay At High Rpm

pommyr33

By pommyr33,
in Engines & Forced Induction

 Share

Recommended Posts

pommyr33 Apprentice

pommyr33

Posted
Posted

i was giving my car a bit of a go today cos i got my licence back yesterday. and when i got to abou6500rpm with foot flat down trying to push the firewall out the car(lol) there was a rattle from the engine bay im running stock boost with exhaust and pod filter can anyone give me any sugestions where to look to fix the rattle

mlyf16 Collaborator

mlyf16

Posted
Posted

ITs either PINGING or theres something lose in your engine bay. Last time i had this problem is my turbo heat shield was loose, so whenever I give it a go the engines vibrates so does the heat shield agianst the turbo. Try looking at your engine bay for anything loose and tighten it. If it still persist look at your spark plug maybe ur car is pinging. Gud luck let us know how u go.

pommyr33 Apprentice

pommyr33

Posted
  • Author
Posted

i lost my licence for losing all my points on my p's in a SSS pulsar and found out about the suspension the day after picking up the skyline. i had my dad drive the car every few days for the 3months i couldnt and it got fresh fuel in the day before i got my licence back shell vracing 100octane i had it dyno tuned the day i got the car and i know my dad hasnt had it over 3000rpm when hes driven it. im gonna check for any lose things in the engine bay in the morning hopefully that will fix it.

i know speeding and drifting is illeagle so why is it so fun?

all the fun things are against the law :)

JVP Grand Master

JVP

Posted
Posted

but what did he get tuned?

he hasnt got an aftermarket ecu, judging by his description, its virtually stock.

i had this problem when i chucked in 100octane in my r32 before i got the ecu remap and it pinged.

obviously the ecu didnt like the 100 octane, and its doing the same in his car.

ricky-tk Rookie

ricky-tk

Posted
Posted

is this true, can the wrong fuel cause a "rattle" noise in the engine bay? i've got a similar problem on my r33 rb25det.

the noise sounds like its coming from near the turbo area of the engine and it's really struggling to keep revs at idle but at high speed it feels fine.

problem seemed to start after filling up with Shell V Power fuel 99 Octane and after it got tested on the dyno, so hopefully it'll not be anything serious and maybe just a loose heat shield etc but that doesn't say why it is stalling?

any help guys PLEASE? :ninja:

ricky

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      Ticking Sound On Idle - Rb25

      By GTSBoy · Posted

      Well, hydraulic lifters will get noisy if they are dirty/fouled in some way, and exactly how that manifests will depend on exactly what schmutz is where. There is a procedure on here somewhere for dismantling and soaking/cleaning them. Replacing them with new is about 50% of the work and about 5% of the money!
    • myrbgivesmeheadaches
      Ticking Sound On Idle - Rb25

      By myrbgivesmeheadaches · Posted

      Thanks for the reply @GTSBoy this is is a hydraulic lifter engine. Yea right i did not realise the lifters were supposed to be compressible while installed. I could push them down but i had to lean almost my while body weight on them.  I have never heard of a lifter/ lifters ticking only at hot idle and getting worse the hotter it gets. I have owned a few jdm cars with noisy lifters. This noise is slightly more subtle, it is more of a sharp gentle metalic tic than the solid and more loud tapping I've heard on lifters. I have used a metal rod, alloy tube, hose and stethoscope and could not find the source of the tick. But it appears to be loudest on the actual engine block behind the exhaust cam gear and next to the oil filter. I had mate (40 year old mechanic) go over it with me and he couldn't find it either..  Could it be a cam seal issue of some sort?  Cheers  
    • GTSBoy
      Ticking Sound On Idle - Rb25

      By GTSBoy · Posted

      This seems problematic and unlikely at the same time. Vanilla RB2Xs have hydraulic lifters. They do have "zero" clearance, but only when running with oil pressure inside them. When not running, you should be able to compress them and obtain heaps of clearance. RB26s and Neos have solid lifters. They should have ~0.3mm and ~0.5mm on the inlet and exhaust respectively. If they have zero clearance then bad things are happening. With nothing else being wrong, it would mean that the valves would be held slightly (ever so slightly) open when they are supposed to be closed and it should have all sorts of problems when running, caused by leakage in/out through the valves. Or, zero clearance can indicate severe valve seat recession. None of it is good. Have you used a piece of hose as a stethoscope to try to localise the noise?  
    • myrbgivesmeheadaches
      Ticking Sound On Idle - Rb25

      By myrbgivesmeheadaches · Posted

      Sorry for reviving an old post, but I'm having the same hot idle tick issue. Did anyone ever find out what it was?  I have checked/ replaced Injectors Coils checked Lifter clerance (is at zero) Checked Cam lobes Replaced exhaust gasket and studs Would appreciate any advice this is driving me nuts  
    • MBS206
      NC MX5

      By MBS206 · Posted

      There's a huge reason manufacturers are tuning in dead flat torque curves... Make them reliable (and more drive able)
×
×
  • Create New...