• Advertisement

Turbo noise/whine

Get help fixing your Isuzu from other club members

Turbo noise/whine

Postby Lagwagoning » Thu Apr 12, 2018 12:50 am

4JB1-T engine in 2000 rodeo
Have slowly developed a whine coming from the turbo, originally though it was a bearing type grinding noise but have ruled that out.
Took the belts off, fan etc.. and still the sound.
I believe its the compressor wheel fins, they feel rough when running my finger across them. Look like the edges are finely serrated.
Theres no play in the wheel/shaft.
I'd liken the sound to a quieter muted air raid siren...one of those old manual wind-up ones.

Engine has 340K on it and this is the original turbo.
My question is: is it risky leaving as is?
Car has boost and power, havnt noticed any drop in power.

Regards
Stan
Lagwagoning
Isuzu Baby
 
Posts: 5
Joined: Sat May 23, 2015 12:32 am
Age: 72
Country: Australia
City: Perth
Vehicle: 2001 2.8 Rodeo

Re: Turbo noise/whine

Postby tonkamu » Thu Apr 12, 2018 12:07 pm

Its one of those things how long is a piece of string. My 4jb1 turbo lasted a year with a lot of play and smoking, only changed it when I couldn't boost 17 anymore.
tonkamu
Isuzu Junior
 
Posts: 98
Joined: Sun Jan 01, 2017 7:23 am
Age: 36
Country: new zealand
City: auckland
Vehicle: 2.8 Black Manual MU 91

Re: Turbo noise/whine

Postby geeves » Thu Apr 12, 2018 3:11 pm

The noise a turbo makes is normally higher pitched than that. It could be wear in the impellor and as long as its spinning ok with no play I would leave it till it gets too loud
Sanding your knuckles before starting work can help. That way you cant skin them
User avatar
geeves
Site Admin
 
Posts: 8132
Joined: Sun May 10, 2009 1:36 pm
Location: wellington
Age: 55
Country: NZ
City: Wellington
Vehicle: 94 bighorn
96 wizard


Return to Engine

Who is online

Users browsing this forum: Google [Bot] and 3 guests