Question about 1998 Land Rover Discovery

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1996 disco 1 misfire error codes 313 and 316, bank B.

Error codes 313 and 316, losses power at lower rpm's, the spark plugs that share the same coil show a little carbon build up as compaired to the others. the wires apear to be in good condition. I think its a coil problem but would like a second opiion before i start throwing money at it thanks

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  • dan1judy2241 Jul 29, 2009

    sounds good. I'll let you know what I find. Thanks

  • dan1judy2241 Jul 30, 2009

    sounds good. I'll let you know what I find. Thanks

  • Dennis Gentz
    Dennis Gentz May 11, 2010

    no problems at high RPM's?

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Could be, but more likely to be fuel. Why do I think that? Carbon build up typically happens when plugs are working (no carbon without fire) but fuel mixture is wrong (air or fuel). If coil, most likely would misfire at all engine RPM, not just low RPM. So, I reckon to look at fuel rail pressure to the injectors first - get a pressure gauge on the fuel rail and check it out. I think, but can't remember for sure, that there is a fuel pressure regulator per bank, but I could be completely wrong. But either way, I'd check that out as it is simple and if it is OK, then check out air path to that bank and any vacuum/air take offs specifically to that bank. If all OK, then why not swap coils? See if problem swaps over. If so, you know it is the coil.

Posted on Jul 29, 2009

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Ok, here we go. error codes were p1313 and p1316. Check engine light would come on after 10 to 15 minutes. When the CEL would illuminate the engine would begin to missfire. It feels like you have a broken spark plug. Did a basic tune-up, wires and spark plugs. chaecked and replace old and cracked vaccuum hoses. and went and paid for a diagnostic at my favorite tire shop and mechanic. we compaired notes and I let him go to work. Catalytics checked out. Oxy sensors checked out. What he came up with was a sticky lifter or valve. He recommended BG quickclean and BG MOA. Its a to step proccess. put the quickclean in. Drive around for 30 minutes, then change your oil, filter and add the MOA. NO check engine light so far and a much smoother idle. good luck.

Posted on Aug 01, 2009

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"Loss in power" usually means that the combustion chamber in your cars engine is full of carbon. That is left behind because of the unburned fuel. With that type of problem, fuel responses will be slower, poor acceleration, lower rpm, etc. You may overhaul your engine for them to clean the carbon manually, but it'll be expensive and could lead to "loose compression". That means the engine won't be as powerful or responsive as before.

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