16-05-2014, 11:07 AM
yes i know the first thing that came into your head was "but this is a pug forum", but it is your wealth of knowledge that I am after, and thought This might be an interesting first post..
The suzuki vitara is one of the 190 or so XUD9 fitted commercials currently left in the UK (i feel blessed),, manufactured 2001.
the engine in the vehicle is the XUD9SD variant found in the pug406, Xantia and some suzuki Baleno's, without the intercooler, with the cat and with a lucas fueling setup. Also, the lucas pump does NOT have the boost compensator fitted to it.
it has a KKK03 turbo on it, car has done 119000 miles..
BUT.. the turbo is not boosting as it should be.
I am led to believe that from standard these should be producing a nice 11-12psi, possibly up to 14psi at standard. and was aiming for a conservative 20psi when i fit an intercooler (going to be an izusu trooper one)
the max fuel screw has been increased, by approximately 65degrees from standard (just over 3/8 of a full turn) as described in a very nice post i found on here referencing the no smoke, no poke thread about it.
there is a new manual boost controller (spring and ball type not the bleed type) fitted, and a new boost guage in the cab (fitted last night).
3rd gear on boost at 2500rpm i am only making about 5-6 PSI.
things I have done so far at running temp
--Checked the pressure guage with my diving gear pressure guage, it is almost spot on (0.3psi off)
--Checked all pipes on and to the boost controller, no visible leaks (soapy water test)
--Checked the pipes to the intake manifold from the turbo, no visible leaks.
--Air filter both in and out (just to check) for a short uphill run.
Thinking one of 2 things: Blocked exhaust (Cat or restrictive silencer) or stuck wastegate..
do you guys have any suggestions further? or am I along the right lines
The suzuki vitara is one of the 190 or so XUD9 fitted commercials currently left in the UK (i feel blessed),, manufactured 2001.
the engine in the vehicle is the XUD9SD variant found in the pug406, Xantia and some suzuki Baleno's, without the intercooler, with the cat and with a lucas fueling setup. Also, the lucas pump does NOT have the boost compensator fitted to it.
it has a KKK03 turbo on it, car has done 119000 miles..
BUT.. the turbo is not boosting as it should be.
I am led to believe that from standard these should be producing a nice 11-12psi, possibly up to 14psi at standard. and was aiming for a conservative 20psi when i fit an intercooler (going to be an izusu trooper one)
the max fuel screw has been increased, by approximately 65degrees from standard (just over 3/8 of a full turn) as described in a very nice post i found on here referencing the no smoke, no poke thread about it.
there is a new manual boost controller (spring and ball type not the bleed type) fitted, and a new boost guage in the cab (fitted last night).
3rd gear on boost at 2500rpm i am only making about 5-6 PSI.
things I have done so far at running temp
--Checked the pressure guage with my diving gear pressure guage, it is almost spot on (0.3psi off)
--Checked all pipes on and to the boost controller, no visible leaks (soapy water test)
--Checked the pipes to the intake manifold from the turbo, no visible leaks.
--Air filter both in and out (just to check) for a short uphill run.
Thinking one of 2 things: Blocked exhaust (Cat or restrictive silencer) or stuck wastegate..
do you guys have any suggestions further? or am I along the right lines