Strange Noise Possibly from S/C?
#1
Strange Noise Possibly from S/C?
Hi All,
First time post here and I know this is a little unorthodox but I actually have a 4.2 s/c Range Rover which I believe is near as dammit the same engine as the xkr.
Unfortunately this is pretty rare in the Range Rovers so there is a lot less knowledge of them in the relevant forums so I have often lurked around here looked for answers.
Anyway I am at a bit of a loss and really hoping you can offer some insight?
I had a vacuum leak coming from one of the intake duct seals. I initially thought I could get it out without removing the elbow so stuck a screwdriver between the elbow and the cooler and needless to say it didn't move. I then found and followed a diy someone did on here and torqued etc, so removed the elbow changed the gasket and changed both ducts.
I put it back together and she now sounds like this and I'm panicking a bit now...
Warm up initially:
Slight Rev:
I then took the elbow off to get some pics of the internals of the supercharger not sure if that all looks good?:
Finally I ran a fuel trim check and they are right up at 22 for both banks on idle...
Any ideas id be mighty grateful!
Many thanks
First time post here and I know this is a little unorthodox but I actually have a 4.2 s/c Range Rover which I believe is near as dammit the same engine as the xkr.
Unfortunately this is pretty rare in the Range Rovers so there is a lot less knowledge of them in the relevant forums so I have often lurked around here looked for answers.
Anyway I am at a bit of a loss and really hoping you can offer some insight?
I had a vacuum leak coming from one of the intake duct seals. I initially thought I could get it out without removing the elbow so stuck a screwdriver between the elbow and the cooler and needless to say it didn't move. I then found and followed a diy someone did on here and torqued etc, so removed the elbow changed the gasket and changed both ducts.
I put it back together and she now sounds like this and I'm panicking a bit now...
Warm up initially:
I then took the elbow off to get some pics of the internals of the supercharger not sure if that all looks good?:
Finally I ran a fuel trim check and they are right up at 22 for both banks on idle...
Any ideas id be mighty grateful!
Many thanks
#2
Join Date: Jan 2012
Location: Newport Beach, California
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badicedog (07-02-2019)
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#12
I believe a member here make a smoke machine to find vacuum leaks. There is a YouTube video on how to make it for about $40
#13
Ok thought I’d better update nobody likes a post which is not finished
So had my mate round who’s a bmw mechanic of 20years. He borrowed a smoke tester and there were two leaks one tiny one from the loose solid plastic pipe I put a video of and then from the pcv it was leaking all out the top of the circle (not loads but a bit. Taped it up to test it was better and he then listened and told me the noise was a knackered alternator... what are the chances
Of everything going wrong as I change one little intake duct. Going to order a denso from Dan Monday I’m off all week so should have a go at fitting doesn’t look too evil and will update...
So had my mate round who’s a bmw mechanic of 20years. He borrowed a smoke tester and there were two leaks one tiny one from the loose solid plastic pipe I put a video of and then from the pcv it was leaking all out the top of the circle (not loads but a bit. Taped it up to test it was better and he then listened and told me the noise was a knackered alternator... what are the chances
Of everything going wrong as I change one little intake duct. Going to order a denso from Dan Monday I’m off all week so should have a go at fitting doesn’t look too evil and will update...
#14
Just to confirm after changing the alt and the pcv (greats fun job the alt) the noise is gone and my ltft at down to 10 and 5 and I thinking that due to the leaking brake booster hose but accidentally got the wrong side through so hopefully can have it good as gold then.
Cheers for the suggestions
Cheers for the suggestions
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