Question about Isuzu Cars & Trucks
I start it up and it makes a knocking noise i put it under load and the noise goes away
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Posted on Jan 02, 2017
SOURCE: knocking when first start engine
Depending on the period of time and intensity of the knock ? If it is a rapid short ,loud knock then disappears altogether you may be dealing with a cam chain tensioner that is loosing oil pressure when the car is standing. A loose cambelt tensioner can increase the noise .
Posted on Jul 29, 2008
SOURCE: 1990 Camry Lifter Noise
there should be small white nyon washers that keep the rockers from rubbing - alot of the time, these washers will break down,and "dissolve" and no one will ever know they were there.. if you go to the toyota dealer parts dept, they can pull a blown up view of the head and get the part number for those washers... install them as shown in the blown up diagram, or your chiltons/ haynes manual, and the noise will be gone!
Posted on Jan 12, 2009
2 fixes - read on - one quick and one long and hard
(little tip - take pics (camera phone) rather than try and remember how it should all go back together)
the knocking is a motor and gears that move the fresh air/recycle flap - it is up behind the dashboard behind the glovebox
the problem is that the gears wear and become misaligned
the flap then can not open fully, its doesnt reach its end stop which switches the motor off
so the motor keeps going the and the gears keep clicking over
the big cylindrical thing you are seeing is the blower motor - it should have a red and a black wire going to it
1. quick fix first
remove the wires to the blower motor
undo the 3 brass coloured cross head screw from around the blower motor
remove the blow motor and fan
turn on the ignition and put the air flow to fresh air (i.e not recycle)
the knocking should start
lay on your back with your head i the footwell
with torch and hands locate the motor/gears that are knocking
find the wires to the motor and remove or cut them (if cutting turn the ignition off first !!!)
make sure the flap is in the open position, tape,jam or wire it open (who uses the recycle position anyway ??)
2. long hard fix
remove the blower motor as described above
this leaves the fan casing
from the engine bay remove the plastic cover from the top where the windsceen wiper motor is (just below the windscreen)
depending on model you may have the engine management CPU on the right handside - this may need removing
on the right hand side there will be 3 (maybe 4) bolts just above where the fan housing is
undo these - note i have seen these with the bolt head in side the car and some with the bolt head on the engine side - dont know why ???
if they are inside the car - you need to remove air trunking, repostion wires and get a long thin socket extension and some flexible bit to be able to get a socket on the head.
once all this is out - locate the motor/gear making the noise (as above)
remove the motor wire and after removing any more obstructing object remove the motor and gears- you will need to be very flexible and have a good range of flexi and rightangle drive socket bits
now all you need to do is purchase the new gears (if peugeot have any) rebuild it all and refit, then put everything back as you found it
shouldnt take more than a day or two, or a finger or two
Posted on Feb 14, 2009
sounds like a lifter my ford f150 does the same thing when its cold but then quits when it gets warm or it could be a weak oil pump. (just some thoughts)
Posted on Feb 17, 2009
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