I have a 2000 xls 4 door 4wd with the 4.0 ohv i bought the truck used with
63k miles on it the motor had 30k it now has 93k miles when i start it up the motor seems to very loud more when it's cold out when it warms up it gets quieter but stills seems a little loud some time it sounds like a diesel i know this is a common problem with the sohc witch is why i looked for a ohv any ideas on what could be the problem would be great thanksCarbon knock ?????????
Like marbles when idling ??????
Try running a bottle of techron
and ONLY use regular gas
thats what it sound like marbles i do run it on regular gas i live in N.Y. only trump can buy the good stuff but what is techron i have not heard of it isn't it a additive in oil
Techron is what chevron puts in its gas, its also sold in bottles.
Its 1 of the additives for fuel that actually works.
Spilled beer works good too :)
did not know it was sold in bottles give it a try thanks
You can purchase them at CostCo. They are actually relatively cheap in price.
ok i the techron on the shelf at pep boys used 2 bottles of this stuff and tne noise was cut down alot thanks for the great info
If the "loud" sound is under the hood, it could be a bad hydrostatic fan clutch (or one that's going bad and sticks when it's cold).
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