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Thread: Keeps dying

  1. #21
    Junior Member
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    Dec 2015
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    Hi,

    I do get the occasional pop as if the odd cylinder fires now and again when spinning it over.

    I have no idea when this engine last run. I bought it with the car and the previous owner said he had it running but I'm positive he didn't as it didn't have an oil filter housing and the pipework was wrong. This is a strange engine. Not the original, that was destroyed so I was told. This is a XJ12 HE engine but has not got any of the fuel injection parts. It came with carbs and manifolds for them, probably from the original engine. This is one of the reasons I am suspicious of the electrics. However it has run on the rig, be it only for about 10 - 20 secs, enough to get a 75 psi oil pressure. I'm having trouble with burning out starters because I spin it for so long without success.

  2. #22
    Junior Member
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    Mar 2017
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    York, England
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    Long time since I worked on these but as I recall the mixture setting (slotted brass nut) should be tightened fully up and then initially turned back one and a half turns and then fine tuned with the engine running. Anti-clockwise to enrich, clockwise to weaken. I assume the valve and ignition timing are checked correct and the carbs dampers are filled with oil, needles centred. I also assume you have the air filter fitted.

  3. #23
    Junior Member
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    Regarding oil pressure, the V12 engines, especially in the E-Type were notorious for low oil pressure on tick over when hot.

  4. #24
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    I've tried it at 2.5 and 2 turns I could try 1.5. Timing set at 12 deg BTDC, dampers filled with engine oil, no air filters fitted, no silencers fitted as it's on a test rig. I don't expect it to run spot on but to run for more than a few seconds would be nice.

  5. #25
    Senior Member
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    Jun 2008
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    essex riviera, uk
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    If the engine is good, these will run on 2 opposing carbs.
    I've messed around with plug leads on these and had a good engine running on 6 cyl's.
    Give the carbs a squirt without the pump running.
    Jaguar Keys & Remotes
    Castle Locks
    196 London Rd
    Hadleigh
    Essex
    SS7 2PD

    07792 552423
    01702 555557
    castle.locks@btinternet.com

  6. #26
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    Still not got anywhere with this problem.

    One question, Should the amplifier get hot when the ignition is on ?

  7. #27
    Senior Member
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    Jun 2008
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    essex riviera, uk
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    No so hot that you cant touch it.
    Jaguar Keys & Remotes
    Castle Locks
    196 London Rd
    Hadleigh
    Essex
    SS7 2PD

    07792 552423
    01702 555557
    castle.locks@btinternet.com

  8. #28
    Senior Member
    Join Date
    Jun 2008
    Location
    essex riviera, uk
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    Any news on this flyer ?
    Jaguar Keys & Remotes
    Castle Locks
    196 London Rd
    Hadleigh
    Essex
    SS7 2PD

    07792 552423
    01702 555557
    castle.locks@btinternet.com

  9. #29
    Junior Member
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    Dec 2015
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    I've started it, at last.

    As I suspected it was something really simple.
    1. The starter was not turning the engine over fast enough
    Cure :- Fitted 2 new battery cable direct to the starter.
    2. Insufficient fuel getting to the carbs.
    Cure :- Fitted 2 temporary choke cable that could be operated while starting.
    3. Stiff engine.
    Cure :- Removed the spark plugs and poured a little engine oil in to the cylinders and then turned it over on the starter without plugs in.

    Re-fitted plugs, put both choke quadrants at FULL choke and tried the starter. Fired up almost instantly. Hell of a noise as no silencers at all at the moment.

    Thanks to all of you with your suggestions etc.

    Bob

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