Please help with xantia that wont start
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Thread: Please help with xantia that wont start

  1. #1
    Tadpole
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    Default Please help with xantia that wont start



    Hi All, newthere cars and having problems.

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    I have a 95 xantia vsx with 8valve 2.o petrol.
    Motor had spun bearing when i got it so got a 406 8 valve complete engine (headto sump)and swaped it in. Replaced the cam belt in the process also.
    Now i cant get the thing to start.
    Coughs like it want to go but then doesnít.

    i have changed all the sensors from one motor to the other. All wires are connectedas far as i can tell, checked timing via looking at both the engine i removedand the engine i have put i and in looking at the woodrif key and locking thecam gear both are in same position so think timing is correct although itcoughs in the air box when trying to start so maybe not.

    Could the ecu be telling it wrong timing?
    I labeled everything on disassembly so think it has all gone back together theidentical way.

    i have read about the harmonic balancer rotation issue but didn't use this inthe cam belt change process.
    Plug leads are in correct order as my dad also has a xantia and Iíve checked onhis.

    Going to do compression test tonight just in case.

    one weird thing is that the dash is chiming when you put ken in ignition.

    Also I can confirm i have fuel in the rail under pressure (although i donítknow if injectors are pulsing) and good spark.

    Does anyone have any further suggestions??

    Help help help!!!



  2. #2
    Now go make me a sandwich Hotrodelectric's Avatar
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    Same year 406 as the Xantia? I've experienced it on GM Northstar engines where the ECM is not compatible as mix-and-match between the years. Battery is fully charged? The strangest errors happen with a duff battery. Do you have an alarm or an immobilizer? Many of them shut fuel delivery off to prevent theft. Are you 100% certain you have everything hooked up? A missed crank or cam sensor, or a missed ground will cause the heartbreak you describe. Have you tried jumpering the fuel pump? Check and make sure it isn't frozen. Is there fuel in the tank?? You wouldn't believe how many times I've seen this! Fuel rail hooked up correctly? If the lines are reversed, you're pumping fuel into the return line.

    Remember, before you go nuts replacing this and fixing that, check simple and stupid FIRST. Review your installation. I'll bet you find your problem.

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  3. #3
    Contented Peugeot Driver addo's Avatar
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    OK, if it has spark it's halfway there. Does it catch and run for a second if you spray it with ether?

    I'm presuming you used a known good harmonic balancer when timing up the new cambelt? Too often this is overlooked...

  4. #4
    Tadpole
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    With lines off it sprays fuel over all over engine bay so ok I think but I'll check it's in the correct in and out line. It won't fire just coughs even with tipping some fuel down its intake or using a snif of arostart. It does have an alarm that may not be working rite which makes some sense. Might be. Any way to tell if the ecus are different between the engines ? They look identical and all sensors are same as far as I can tell.? Anything further to check?

  5. #5
    Contented Peugeot Driver addo's Avatar
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    If it won't catch on aerostart then how sure are you of a healthy spark?

    You can check for injector pulses with a noid light, these are a few bucks at Bursons etc.

    Does the tacho move when you crank it?

  6. #6
    Fellow Frogger!
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    You have spark and fuel and air
    It fires at the wrong time and farts through the inlet manifold
    Check the timing
    Take off a plug lead and turn over the motor slowly till you get a spark on that cylinder
    Remove the plug and check if the piston is close to TDC
    It should be just from the top
    If it's somewhere else check and see which prisons are at TDC
    And the ascertain which is on compression stroke
    Etc. etc.

    Old skool

  7. #7
    Tadpole
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    Quote Originally Posted by Sherman View Post
    You have spark and fuel and air
    It fires at the wrong time and farts through the inlet manifold
    Check the timing
    Take off a plug lead and turn over the motor slowly till you get a spark on that cylinder
    Remove the plug and check if the piston is close to TDC
    It should be just from the top
    If it's somewhere else check and see which prisons are at TDC
    And the ascertain which is on compression stroke
    Etc. etc.

    Old skool
    Going to try this on the weekend and check fuel tail in-out and compression test.
    Does anyone else know if these engines (406 and zantia) arnt compatable??

    Also just a question where is the crank/cam sensor on these engines?

  8. #8
    Real cars have hydraulics DoubleChevron's Avatar
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    If it was running in the 406 ... and you only touched the cambelt .......................... that's where I'd be looking
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  9. #9
    Tadpole
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    Quote Originally Posted by DoubleChevron View Post
    If it was running in the 406 ... and you only touched the cambelt .......................... that's where I'd be looking
    That is something i dont know!!!

    and make things all the more difficult

  10. #10
    Fellow Frogger!
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    Will the Noid light check for ignition pulse on the 1600 twin cam?
    Or do you just check the injector pulse?

    Previously running car been sitting for 6 months tried to start it but nothing, tried some ether starter and it ran two weeks ago.
    Tried yesterday same deal no good
    No warning light on the dash.
    Got fuel pressure at the rail.

    Will swap a working flywheel pick-up tomorrow if i get time.

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