hi there everyone,

the 1242 died on the way to work this morning, no power whatsoever before finally cutting out, now when started, putting very very badly, and no throttle response at all.

usual same old stuff, have done many searches on it and read a lot in the punto part about ECUs, coil packs, other sensors etc.

Thing is, my car isn't showing the engine management light would this say it's a definate mechanical problem? i.e. valves, followers? i'm going back to the car soon to check out the coil packs

Thanks in advance

Lenny

cam belt no slipped?

Sounds cam belt ish to me.

Cheers

D

dave said:

cam belt no slipped?

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went to check that earlier on lunch break, but got sidetracked. Will check that too. When i was cranking it by hand earlier it was tight (as normal) but I could hear compression escaping the engine when the pistons were reaching the top of their stroke, is this normal?

Thanks again

Lenny

When i've turned by hand i've not heard that. I have heard noises from the oil pump, at least thats what i think it was, but def not heard much top end.

If the belt has slipped though, the valved could be opening or closing too soon.

I'd check the timing first like already said

Kristian

Turning by hand you will hear the compression release into the exhaust if you listen very very carefully. If the timing is out, then you will hear it come out through the inlet. This is a bad thing.

Cheers

D

and have you ever heard theoil pump, or was i mis-interpretting this? I've only ever cranked a goood engine by hand, so it was a normal noise

Kristian


edit -- may sound a bit cocky after reading it, not meant too

well looked at the timing, looks in, but didn't take the expansion tank off. Towed it back home so i can take a better look tomorrow. Will test compression as well if necessary.

Thanks again for all the help, will keep you all posted

Lenny

On further inspection the head gasket has gone between cylinders 1 and 2, big chunk missing out of the gasket, and a channel taken out of the head between the 2 chambers The block has also been scorched but I think it should be ok when cleaned up. Will get some pics up tomorrow as off out soon!

Lenny

some one been using just water instead of coolent?

dave said:

some one been using just water instead of coolent?

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Guilty as charged.

Didn't realise it made that big of a difference? I'll be using coolant when i do it next time then! Reason i didn't use any is I changed my rad, and refilled with water and antifreeze/coolant 50/50 mix. Then I had to drop it all out to fit the SS manifold, than refilled it with water in case i had to drain it again. Poor excuse i know, but true!

Will be using coolant and anti-freeze from now on!

Lenny

woopsies

Just in case you are wondering why, I used to be into PC watercooling before it became popular, and learnt that when you mix two different metals in a water loop, they react with the water and create a chemical imbalance. The outcome of that is one of the metals will attack the other metal.

As you know your block is cast, and head is aluminium, so that creates a problem.

The stuff you put in your water acts as an antifreeze, but also as a corrosion inhibitor, and this is an area thats very important.

When buying antifreeze, pretty much all carry the corrosion inhibitors, but its alsways best to check they say suitabe for aluminium heads.

If you had an all cast heat and block, and never went in sub zero temps, you may get away with water only, it may rust though

For pure cooling though, water is better than antifreze, but you certainly pay a lot for the luxury

Kristian

kritip said:

Just in case you are wondering why, I used to be into PC watercooling before it became popular,

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Ahh those days reading THG...

kritip said:

For pure cooling though, water is better than antifreze, but you certainly pay a lot for the luxury

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thats why you add "Water Wetter" to the coolant loop, just dont do it an open res water cooled PC cos it stinks!