misfire on cylinders 2,4,6 and 8
I changed my coil packs, plugs and wires about 3 months ago no issues until about a month ago I noticed a slight miss while at idle.. Then about a week ago the SEL came on and gave me the 4 even # cylinders and a 1300 code and the multiple misfire code. I bought new plugs again but this time time I used a double platinum autolite and I also purchased STI wires..I noticed a big difference in performance but the missing is still there and not all the time just during low speed or idle.. at least that is when I can tell its missing..although the SEL has not illuminated as of yet.. I have been reading other post with similar problems some point me in the direction of VSS ... I have a 2002 DiscoveryII ..Does this vehicle have a VSS ? I could not find it in RAVE but I found the speed signal sensor is located on the tranny..does this provide the same input for the speedometer in the dash? Any suggestions?:D
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you should check the RAVE but I do not believe there is an odd coil and an even coil.
I believe each coil fires odd and even numbers, if so probably a gasket problem. |
It's not a coil problem cause those misfires are on both coils.
Do you have anything else other then the 1300 codes. I have seen this before, usually on the other bank and am not sure if it is vacuum or electrical. If you have a good Rover mechanic, check with him and let us know what you find. |
Originally Posted by Disco Mike
(Post 375065)
I ti not a coil problem cause those misfires are on both coils.
Do you have anything else other then the 1300 codes. I have seen this before, usually on the other bank and am not sure if it is vacuum or electrical. If you have a good Rover mechanic, check with him and let us know what you find. |
The T/B being dirty won't cause this but should be cleaned.
What is going on with your tranny and what fault codes do you have? |
Originally Posted by Disco Mike
(Post 375103)
The T/B being dirty won't cause this but should be cleaned.
What is going on with your tranny and what fault codes do you have? https://landroverforums.com/forum/di...roblems-51868/ |
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Update for 2,4,6, and 8 cylinder misfire
Wanted to try and finish this conversation..OK I changed my crankshaft position sensor..still had misfires..disconnected exhaust on both manifolds thinking my cats my have been clogged..still misfiring...Thought for a minute and decided to get some oil additive...added 2 bottles to oil...at first misfire was still present..then gradually the engine has stopped altogether..this is the third day and engine is running a lot better..Any thoughts on what could have been sticking... valves maybe? Should I do an engine flush with my next oil change?
Thanks in advance |
any signs of what going on with the plugs? have you checked them?
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I did pull the plugs on the passenger side ...they had some carbon build up but they did not look bad...I wire brushed them and stuck em back in.
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