Question about Mitsubishi Lancer

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My timing belt broke and damaged my valves on heads bought used heads intalled them but car wont start want to check the heads

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  • corvette04 Jul 19, 2010

    thanks one question is what is the torque one the head bolts.

  • corvette04 Jul 19, 2010

    thanks one question is what is the torque on the heads. you are probebly right on the bolt they streached because i did a 54lb torque and they dont seem right.

  • corvette04 Jul 19, 2010

    i got the tightening sequence and torque from auto parts but it doesnt feel right ive done this job a few times before and it doesnt feel tight enough. its on a lancer 4 cylinder 2.2 engine size your very helpful. thanks

  • corvette04 Jul 20, 2010

    checked pressure two center pistons have low pressure.the heads need rebuilding.gonna take them to the shop.thanks

  • corvette04 Jul 24, 2010

    2002 Mitsubishi Lancer 2.0 L engine. Took heads to the shop and had rebuilt. Car is in time, heads are in and have compression. I have fuel, but dont have a spark. Car cranks, but wont start. My questions: 1)Would the crankshaft sensor have anything to do with spark? 2) What other trouble shooting items should I check since timing belt broke? 3) Also need to confirm tightening sequence on bolts ?

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Hi, first of all you need to double check the timing is correct. once you have done this the next thing for you to get done is a compression test, you can buy these from most car spares shops and what this does is it goes in place of a spark plug then you turn the engine over and then it gives you a compression reading, if this reading is then low this would indicate problem with the head.

One thing to make sure you did is to replace all the head bolts with new head bolts as the old ones will stretch these should be replaced every time the heads are removed, also gaskets should never be used twice so if the heads have to come back off then make sure you buy new gaskets.

did you torque the head bolts up to the correct settings as stated in the repair manual not doing this will result in bad seal at head gasket and this will cause the problem you are having.

The next thing i would do is get hold of a compression testing kit and test each chamber for the compression make sure the car cant start by removing the leads from the coil you dont want the engine starting whilst doing this test. once you have done this test you will then have a good idea if the head is at fault or something else, if the compression is good then this points towards another problem such as timing.

get the compression test done and let me know what the results are, without getting this done you could waste your time stripping the car down for nothing so the compression test will tell you 2 things it will tell you either the compression is good and nothing to worry about or it could tell you compression is low and the heads need skimming or the pistons need checking, the valves hitting the pistons could have damaged the rings or split a piston so the compression test would be the next thing any mechanic will do.

have you checked the timing is correct on the bottom pulley you will sometimes have 2 timing marks one is a mark for top dead center and their is usually another mark for lining the timing up now the tdc mark is not the timing mark you need to use this is the timing mark for the strobe light when adjusting the timing electronically, so double check you dont have 2 timing marks not all models did but its worth double checking.

let me know what work you have done and if you have replaced the head bolts as these will have strecthed and would be scrap also make sure the torque settings have been done correctly for the head bolts and did you make sure any signs of the old gasket was removed. let me know then i can assist you further also get compression test done as this will give you a good idea of the problem your having and it will save you loads of time taking the engine apart without knowing if its a compression problem or something un-related

let me know how you get on or if you need further assistance ok

Posted on Jul 19, 2010

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  • paul proctor Jul 19, 2010

    Hi let me know what the exact make and model is and what size engine you have and then i should be able to give you the correct torque sequence it is usually tightened up in different stages such as first stage 10nm then second stage 30nm then third stage etc, also the head bolts need to be tightened in certain order to make sure the head dont warp when tightened it needs to be tightened in order starting from the middle bolts and working your way out.

    now the head bolts are made to stretch to stop them cracking when the engine is hot so you need to replace the bolts every time the head comes off, so you need new bolts and head tightening sequence and also torque settings sequence.

    now if you go into any garage they will have a data book and they will tell you the head bolt sequence and torque settings they wont charge for this but will tell you if you ask them. you could also ring the main dealers and ask them head tighten sequence and also torque settings they will give you this over the phone for free.

    but let me know make and model and also engine size and ill try and locate the info for you.

    failing that buying a workshop manual would be an advantage as this will give you all the info you need.

    not tightening the head bolts in correct order and in the correct stages can and will warp the head so if buying new bolts and getting the sequence right dont solve your problem then the chances are the head is warped and will need skimming.

    hopefully new bolts will solve your problem.

    let me know and ill do my best to assist you with the sequence and torque settings ok


  • paul proctor Jul 19, 2010

    CLICK HERE

    try this link i couldnt access it myself so cant check if its the same engine as yours not cuz theirs a problem with the site its just my download speed is to slow till i get my new computer back so have a look and let me know if its no good give me a shout back and ill source some more for you ok


  • paul proctor Jul 19, 2010

    CLICK HERE

    this link should tell you all you need to know scroll down the page and you will find the tightening sequence as well as the stages for tightening make sure you buy new bolts and you should find you will have no problems.

    let me know what happens ok


  • paul proctor Jul 19, 2010

    hopefully that last link gives you all you need to know.

    let me know if it solves your problem and what happens ok


  • paul proctor Jul 25, 2010

    hi, didnt my last link i sent you show you the tightening sequence its not crucial you have it 100% correct basically all you need to make sure you do is start from the middle and work you way outwards as long as you do this then this is the correct way to go about tighten sequence.

    here is a guide on most cars head tighten sequence:
    10 6 1 3 7
    8 4 2 5 9.
    now as long as you follow that guide you should have no problems just do them one stage at a time always going in the same order when you do the second stage.

    now other things to check would be all connectors are fitted correctly and securely make sure the connection are connected to the right part usually color coded or different fittings so double check all these.
    also double check all earth wires remove and refit to ensure you have a good earth going to the engine block and chassis.
    now the crank sensor is what sets the timing for the firing order so this needs to be working to ensure you have a spark if this is not working then you will have no spark, you could remove the sensor and give it a clean but it would be worth getting a manual to ensure you have this set to fire at top dead center, im not 100% sure how you set this up as i have never done one before so would not know without looking in manual.

    now if you have an imobiliser on your car then have you tried shutting all the doors and windows then locking the doors then unlock the doors and then try starting the car sometimes without doing this the imob wont switch off so its worth giving a try.

    check you have ht leads fitted correctly in coil pack, ensure electrics are connected to injectors have a good look at the back of the head just under the injector rail and check you have done all the connectors back up behind their as these control the power to coil and injectors.

    check you have left no earth wire off the engine follow the earth wires from battery and see where they go to you should have one to chassis and one going to engine block make sure these are fitted correct even undo and refit.

    let me know what happens ok


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