range rover cyl 2.4,6,8 problem

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range rover cyl 2.4,6,8 problem

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range rover cyl 2.4,6,8 problem - 2/10/2008 3:13:11 PM

pedrom

Posts: 2
Joined: 2/10/2008
Status: offline

Hi if somebody can't help me. I have a 1990 range rover county 3.9. I bought it with cyl #7 dead no compression,took the heads out and #7 had intake valve seat pulled out and no damage to piston. Then I send the heads to be repaired at the machine shop.Then i put new timing chain and sprokets with the repaired heads and gaskets. I start using the rover but it lacks of power ,i check the compression again and i have more than 155 psi in every cyl. But i found spark plugs 2,4,6,8 clean and i mean white compared to 1,3,5,7 that have a nice brownish color, the thing is if i touch the exhaust manifold from 2,4,6,8 side is cold to the touch compared to the other side manifold that wiil burn your hand right away. Today i try swapping both o2 sensors nothing change ,a friend told me that if right catalitic converter is clogged it could be my problem. Another thing is that i try pulling out fuel injector plugs from 2,4,6,8 and nothing happened but when i pulled 1,3,5,7 the engine start misfiring. Sorry to be this long but i ran out of troubleshooting ideas!

Post #: 1

RE: range rover cyl 2.4,6,8 problem - 2/10/2008 4:17:16 PM

Disco Mike

Posts: 9554
Joined: 4/27/2006
Status: offline

Sounds like you may have a coolant leak on the right bank.
Might want to do a pressure test on the coolant system.

_____________________________

Mike
Retired service manager. Member of the Solihull Society, NCLR club,past member of the SCLR club and Santa Barbara 4 Wheelers.
99 D2, 3" lift, lockers, H.D. axles, 4:11 gears, Custom front and rear bumpers, Warn winch, HID lights and an Engel 45.

(in reply to pedrom)

Post #: 2