Question about 2007 Land Rover Range Rover Sport Supercharged
I have a 2006 sport super charger and the fault code reader keeps saying misfire on cylinder 1,3,5 and 7 i have checked for fuel and spark and both are there on all 8 cylinders. also it comes up with fuel trim bank 1, i have checked and replaced everything that could cause an air leak any ideas cheers
SOURCE: #4 CYLINDER MISFIRE
Hi the most likely fault would probably be head gasket, it maywell show no other signs of fault as it can blow into next cylinder.
Have a compression test carryed out and all 8 cylinders should be within 10% of each other.
Posted on Feb 08, 2009
SOURCE: Engine misfire...
First off what you want to do is see if the coil is keeping fire to the cylinders. If so is the fire blue or redish/orange. If it is blue then its not a firing issue. If it is red then you probally need a new coil. Now if you chose option A then check the spark plugs and make sure they aren't fouled out. The way to determin this is that they will be black and smell like gas really bad.If not then check the spark plug wires and make sure they are not ripped, broken, cracked, or show any signs of failure, If not then make sure it is getting plenty of gas. If not then it is either the fuel pump or the fuel filter. If it is a fuel injected engine then make sure the injectors are all working properly. To do this you will probally have to bring it into a shop and have them check. If it is a carberated engine then manually chock the carberatur by holding the top flutter valve closed for a second or two. If the flutter valve gets covered in gas real quickly (in less than 2 seconds) then it should not be a problem with the carburator. If you are still haveing problems with it after checking all of this then give me a shout back and i will see what i can do.
Posted on Jul 22, 2009
I take it you have also checked plug and wire. If so could have carbon build up causing valve sticking or camshaft rolled lobe or bad lifter, bent pushrod. This about covers all other possibilitys
Posted on Feb 19, 2012
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