R33 Spec 1.5, cylinder 4 not playing :(

Thread in 'Technical Questions' started by DoriDave, Apr 4, 2014.

  1. DoriDave

    DoriDave ~~Sore-Arse~~

    Joined:
    May 26, 2006
    Posts:
    5,586
    Likes Received:
    0
    Location:
    2 miles from the Pod
    Hi guys, I'm having a problem on my R33 Spec 1.5, its missing on the 4th cylinder from the front. All other plugs are fine, just 4 is wet and can see the top of the piston face is nice and moist through the plug hole.
    Took all the plugs out and fuel pump fuse, cranked it quite a few times, put new plugs in, replaced coilpack harness with a good 2nd hand one, cranked it again, then replaced the fuel pump fuse, still running on 5 and I can pretty much guess it's still cylinder 4 not kicking in [​IMG]

    Had a diagnostic a couple of days ago which came up with a p1320 code, IGNITION SIGNAL PRIMARY, this was before the new plugs and harness.

    Ran fine when I bought it last Saturday, idled beautifully on the sellers driveway, drove it for an hour and a half with no drama's including stop start traffic on the M25 and M1, then 8 miles from home, dropped to 5 and been there ever since.

    Any other suggestions?
     
  2. Matt_slater

    Matt_slater Member

    Joined:
    May 15, 2011
    Posts:
    108
    Likes Received:
    0
    Location:
    Barrow in Furness
    Have you tried swapping cyl 4 coil with another to see if the misfire migrates?

    Also check the compression, ringlands can be a cunt
     
  3. DoriDave

    DoriDave ~~Sore-Arse~~

    Joined:
    May 26, 2006
    Posts:
    5,586
    Likes Received:
    0
    Location:
    2 miles from the Pod
    Yep, tried that, even moved spark plugs around aswell. I'm thinking either the loom further back or possible an injector playing up.
     
  4. gixxerboy

    gixxerboy Member

    Joined:
    Feb 22, 2013
    Posts:
    45
    Likes Received:
    0
    You could get a mate to crank it over whilst the plug is resting against the cam cover to see if it is sparking
     
  5. DoriDave

    DoriDave ~~Sore-Arse~~

    Joined:
    May 26, 2006
    Posts:
    5,586
    Likes Received:
    0
    Location:
    2 miles from the Pod
    Yeah, I'm gonna give that a go tomorrow, plus I'm going to bite the bullet and do a compression test too, just to ease my mind. It doesn't smoke or anything but just want to make sure.
     
  6. DoriDave

    DoriDave ~~Sore-Arse~~

    Joined:
    May 26, 2006
    Posts:
    5,586
    Likes Received:
    0
    Location:
    2 miles from the Pod
    Definitely no spark on #4, maybe the mess of an ecu loom explains my issue!!!!

    [​IMG]
     
  7. DoriDave

    DoriDave ~~Sore-Arse~~

    Joined:
    May 26, 2006
    Posts:
    5,586
    Likes Received:
    0
    Location:
    2 miles from the Pod
    Sorted, now back on 6, think it was the fact that the ECU plug wasn't in properly :D
     

Share This Page