Technical valve timing 1.2 16 v

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Technical valve timing 1.2 16 v

perfectpercy

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How do i do the valve timing on this engine. i have put the locking tool in the for the camshaft, and got all the pistons level, but i dont know what the position of the crankshaft should as regards the crank postion sensor. The timing belt was taken off and the engine was turned , as i thought there would be timing marks to put it back together. i have tried to start it, with no joy, it spins over very fast as if there is no compression, this is what makes me think that when i put the belt back on the crank was in the wrong place.
 
I assume that as you've locked the bottom end , and the top-end - then surely you just refit the belt and all is set,
is that what you've done ? , any other work done..??,

try a SEARCH or look in the Punto section as it's a motor used in them too.

Charlie
 
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I have locked the camshaft and set the pistons so that they are level, MDC i think is what it is called, then i have refitted the belt. when i turn the engine over it just spins as though there is no compression. On the crankshaft pulley there is a space between the teeth, this i assume is for the crank position sensor. does this control out the ignition timing ? Maybe i have the valve timing right in relation to the pistons, but is the spark at the right time to the valves timing. The haynes manuel does not mention the postion of the crankshaft. It does say that the pistons should be level, but it what it does not say is if the no 1 piston is on the compression stroke or exhaust stroke. The work that has been done to the engine is, head skimmed, and new head gasket fitted
 
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If I remember correctly the number one piston should be on the upstroke, but I'm not sure.

The crankshaft timing sensor is in a fixed position and cannot be moved. If the engine turns over like there is no compression it's most likely because there isn't any. This would indicate an error in the setting of the camshaft timing.
 
I have locked the camshaft and set the pistons so that they are level, MDC i think is what it is called, then i have refitted the belt. when i turn the engine over it just spins as though there is no compression. On the crankshaft pulley there is a space between the teeth, this i assume is for the crank position sensor. does this control out the ignition timing ? Maybe i have the valve timing right in relation to the pistons, but is the spark at the right time to the valves timing. The haynes manuel does not mention the postion of the crankshaft. It does say that the pistons should be level, but it what it does not say is if the no 1 piston is on the compression stroke or exhaust stroke. The work that has been done to the engine is, head skimmed, and new head gasket fitted

when I did one of these ,
I found that there were 2 identical looking electrical plugs on the end of the fuel-rail..If memory serves.
someone later posted similar symptoms to yours.. - they had plugged them in the wrong-way around,
it may be worth double-checking..!!,

as far as ignition timing is concerned - my opinion is there is a pick-up that times the sparks , so as long as you get the crank and cam timed correctly it will all be correct.

Good luck,
let us know how it goes, as the info will be useful to others,
Charlie
 
Now Then guys just a update. I have done the valve timing, checked and rechecked,as i come to start the engine, it fires up momentarly and then cuts out and just turns over on the starter, if i stop and try again it does the same, its as though it is starved of fuel. there is fuel in the tank. where is the fuel pipe that serves the injection system, i have one that goes into the injector rail in the middle, but cant work out how to get it off so as to see if it getting fuel. Or is there another way of checking, also should i be able to here the fuel pmp when i turn on the ignition ?
 
should i be able to here the fuel pmp when i turn on the ignition ?[/QUOTE]

yes , you should..!!

normally, it doesn't matter if you turn the key 100 times you will hear the pump
( under the back seat) run for a few seconds each time,

are you SURE you've not muddled up the 2 similar plugs around the injection system..??

Charlie
 
should i be able to here the fuel pmp when i turn on the ignition ?

yes , you should..!!

normally, it doesn't matter if you turn the key 100 times you will hear the pump
( under the back seat) run for a few seconds each time,

are you SURE you've not muddled up the 2 similar plugs around the injection system..??

Charlie[/QUOTE]
Thanks Charlie, I will have a look at that tomorrow, the weather is not that good to have a look today, and also i will have a good listen for the pump, now that i know where it is.
 
Hello again guys, its been a long time since my last post as i have just left the car alone until the good weather has arrived. i went to it this morning, put a battery on it, then got a mate to turn it over, whist i sprayed fuel into the manifold, it coughed and spluttered, then fired up. So it looks like it was fuel all the time. it showed a quarter of a tank on the guage, when i got the green flag man out to see it just after xmas, he said it was getting fuel so i discounted that as a problem. i went to drain the fuel out of the tank this morning as i intended to scrap the car, when i went to syphon it, i could not get any out, that got me thinking, as all along it souned like fuel starvation. So i sprayed some in and it started running. i went and bought two gallons and put it in, gave it a good s[pin, no start, so now i am thinking petrol pump. I take it that is under the rear seat ? Correct ?
 
I had a look for the petrol pump, its in the tank. It was not working when i turned the ignition on, so i put a live feed to it and it worked, i took the live feed off and reconected it. i then had a look at the fuel cut off switch which is in the passenger footwell,pressed it a few times, nothing happened with the pump, so i then bypassed the switch , when i turned the ignition on the fuel pump started pumping. So that is one problem solved. I now have to check if the fuel is getting to the fuel rail, if it is, that means the problem is with the injection system ? any ideas on that ?
 
Hi guys, The engine is now running, there is a god after all LOL !
Right, heres what i done today. Went to a scrap yard and got another fuel cut off switch, that was not working, so i left the bridge on so as to get the pump to work. I also took a few sensors off the scrap car to try and eliminate the problem, one off the inlet manifold on the drivers side, and one off the top of the nearside wing. I first put the one off the inlet manifold on, i believe its the map sensor, and you know what, it started up and ran as sweet as a nut. Ive filled it with water and bled the system, tomorrow i will be fitting all the little bits and pieces, if i can remember where they all go after all this time. And to think< last week i made up my mind to scrap it, but thought ,no, i will have one last go, glad i did now, and so is my daughter, as she has got a car with power steering, airbag, four doors etc. So thank you all for your contributions to this problem.
 
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