- VH 253 V8 Diffs Exploding Holden
did the stupid thing of hooking a 6 cylinder diff up to a 253 V8, this
causes the stock diffs to explode when put under intense load for long
times eg: burnouts, heavy towing. The best solution is to bolt up a
308 diff to the 253 or get a 9" diff for it.
working rear tail lights. VB - VK (possible VL) If
you find dim, or partially working rear lights, a common problem found
is water corroding electrical connections. Thouroughly remove rust from
globe sockets and mounts, then the full current can travel through the
trick is to drill a small hole under the lens to let the water out.
- VK leaking window seals Stop
looking for boot leaks through the boot seals. One of the most common
places for the leak to occur is through the window seals (front as well
onto the front floor). Usually due to rust under the seal as well. Naturally
the window has to be removed and is quite possible that it will crack,
especially if there are chips etc. Repair the rust if present,and reseal
with a new seal. The genuine VK window seal will fit into all of these
and is much superior,also it doesn't have the annoying centre insert!
- VK pools of oil appearing next to the carburettors on 253 and 308
as a mechanic I see people with complaints about oil in the inlet manifold
valley next to the carburettor. The inlet manifolds on blue and black
engines warp near the egr crossover and oil leaks past the bolt and
forms a pool of oil. The proper way to fix this is to remove and machine
the manifold, but a temporary fix is to remove the 2 centre manifold
bolts on the right side of the manifold and apply a sealant to the bolts
and replace. It's a common problem but can be easily overcome! I hope
this can be of use!
- VK Substitute Carburetter (Black and Blue Motor) The
most common cause of engine troubles with the 202 motors was the Varajet
carbi. It made the engines work to well bellow their potential. A cheap
substitue for the varajet is a small Weber (32-36) off of the XE falcons.
They cost around $40 dollars (plus adaption plate) and are easily fitted
to these motors with only the accelerator cable mount needing to be
modified. They not only provide greater horse power but also increase
your fuel effeciency. (N/B: With the black motor in the VK the secondary
throttle sensor must be disconected and the computer (EST) must be reset.
- VK blue and black six cylinder engines erratic idle A
lot of the time erratic idle on blue and black 6 cylinder commodores
can be caused by warpage of the inlet and exhaust manifolds. Seeing
that the inlet and exhaust manifolds are bolted together but are of
different metal compositions, they expand and contract at different
rates. After time, these manifolds work loose from the head, which inturn
creates a vacuum leak and therefore eratic idle. Usually tightening
the manifold bolts along the head rectifies the problem, but in the
worst case, the manifolds need to be removed and a new gasket fitted.
9 out of 10 commodores I service have this problem, so it is very common
and easily fixed!
flasher unit only clicks on left or right turn and flashes quicker The
problem is a faulty earth. Go to the rear lights and check the earth
connection of the wiring harness. The problem will be that the earthwire
in the harness is not making proper contact with the earth in the plug.
(possibly) and VK 3.3L Carby's flooding If
your sitting at the lights and your VH/VK stalls on you and a strong
smell of petrol is hanging around, more than likely it is a stuck needle
valve in the carby. One solution is to dismantle the carby and rekit
it, or another simple and less expensive option is to take the air filter
off, and where VARAJET is written, tap on it with a screwdriver. This
will move the needle so it sits back in its seat.
Taillight problems The
VK may see these problems as the indicators, reverse light warning and
other dash lights coming on when you press the brake light. This problem
(which I have seen on many VK's) is caused by poor design of the vehicle's
earthing structure. To solve the problem, first locate the plug in the
boot that connects the tail lights to the rest of the vehicle wiring,
second, locate the black earth wire (usually melted). Cut the earth
wire on both sides of the plug. Strip the wire back and solder the two
together, then tape. Don't use quick crimp connectors because you will
then suffer the same problem.