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Hi they’re I’ve got a vw pol 1.2 3 cyl I’ve just done a c...


Hi they’re I’ve got a vw pol 1.2 3 cyl I’ve just done a cam chain on it as isit was throuwing up code saying crank shaft sensor I then changed that and then still giving same code so I done my cam chain as it had jumped a tooth I ...

Hi they’re I’ve got a vw pol 1.2 3 cyl I’ve just done a cam chain on it as isit was throuwing up code saying crank shaft sensor I then changed that and then still giving same code so I done my cam chain as it had jumped a tooth I have now done that and now when it is up to temperature it lacks acceleration power and also struggles to start ones I’ve turned it of do Mechanic's Assistant: Have you checked the connectors on the sensor itself? It's important that they not be loose or corroded. Yes checked all of that do u think the timing could be put Mechanic's Assistant: What is the model/year of your VW? 09 plate Mechanic's Assistant: What year is your VW? 2009 Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far? Yes I am I have done a new cam chain and now it is not running right when it gets to temperature Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? That when it get to temperature it lacs acceleration but before getting to temperature it runs fine but if I turn it of it struggles to start but then if I leave it for a long time it fires straight up

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Responses

Automotive Expert
Hello im here to assist you, it sounds like the timing is retarded. Please check valve timing again it sounds out...
Automotive Expert
Can you also do compression test to see if any valves are damaged slightly...

Okay mate but it all linned up as I had to put keys in to crank shaft and cam shaft to lock it of and it all lined up when I put new chain ondo u know what psi it should give out of compression test
Automotive Expert
125 psi to 150 psi is normal

Okay mate thanks I’ll test it and could it be the case it being out of timing if it’s slow acceleration when warm
Automotive Expert
Thank you, \*\*\*\*\* \*\*\*\*\* slow acceleration..

Do u have a diagram for timing chain on the vehicle as I had one before but must not be right if it is out of timing
Automotive Expert
If you used the locking tools then it must be ok...

Well yeah I put on locking tool where the cam shaft sensor goes and one tool in where the crank sensor goes I did have to rest the timing by putting cam shaft tool in first and in then I had to crack the cam shaft sprocket off then tun it till the crank shaft lined up it was only out a half a tooth or so so now they do line up so I don’t think the timing can be wrong what do u think?
Automotive Expert
Please stop guessing i think you will find a problem with compression test...

if I compression test it and it’s low means one of the valves are f\*\*ked basically or engine is scrap be cheaper to replace it
Automotive Expert
The valves run so close you may have just clipped one which is enough to make a difference..

Okay mate will check that then go from they’re if it does need a new valve could u give me the information to changed like the gauge it needs to be away from cam lobe etc all info I would need
Automotive Expert
That is tappets , you need to remove plugs and use a compression tester..

Ok mate just want a bit of info before doing that as won’t be doing it till tomorrow now so just want to know if it is lacking compression and needs a valve what would I need to do a new valve and adjust the tappets to what
Automotive Expert
They are hydraulic tappets no adjustment reqd..

No adjustment at all even if I change the valve in it
Automotive Expert
No they are oil filled adjusted..

Okay mate spot on will I just be able to message u again tomorrow when I’ve tested it or will it be someone els
Automotive Expert
I will leave this page open..

Okay mate cheers \*\*\*\*\* \*\*\*\*\* lot will message u tomorrow
Automotive Expert
OK

Could u get me some info on where the fuel pump fuse is on this car
Automotive Expert
Fuel pump fuse is F41

That’s the problem the cylinder closest to gearbox is only giving out 80 psiDo u think it could have dropped a piston or just need new valve ?
Automotive Expert
Ok then i would say valve bent and head removal reqd...

Okay mate cheers wouldn’t have done any damage to the pistons at all just the valve ?
Automotive Expert
The valve gives way before piston..

Okay mate cheers \*\*\*\*\* \*\*\*\*\* just do all 6 valves on the head ?
Automotive Expert
Remove the head and asses the situation first..

Okay then I message u back when I have done that
Automotive Expert
ok

Can I have any info I need when doing the vavle for example torque settings of head bolts and stuff like thatwhat els I should change when doing this
Automotive Expert
When you purchase the head set the torque settings come with it, change oil and filter and dont forget anti freeze..When you set up the timing turn the engine over by hand twice and not with the key...

Okay mate where shall I buy parts fromI was just going to purchase valves separately
Automotive Expert
You can buy everything from Partco or the like..

I was going to buy it from euro car part was just going to get a valve but do u think I should change anything els
Automotive Expert
I wouldnt get anything until the head has been removed ad assesed..Euro car parts are good..

Had head off valves don’t look bent

Can u get me all the nm of torque the head bolts and everything els needs
Automotive Expert
Poor fluid into ports see if the fluid leaks out of the valves. When you purchase head gasket the torque settings are in there...

Yeah I did poor petrol down them and didn’t leak
Automotive Expert
The cylinder that had low compression poor fluid down onto piston see if it dissappears.

Ok and if it does rings have gone
Automotive Expert
Yes or you might have a broken ring..

Ok will do that later
Automotive Expert
OK

As your the bloke I’ve been dealing with I also have another vw polo 55 reg 1.2 and it keeps Miss firing on cylinder 3 so I’ve changed coil pack and spark plug but seems to start and break down when drive it for about 20 minutes it then starts misfiring on cylinder 3 sometimes it also blows sparks plugs can u help on 3
Automotive Expert
Hello again , test the injector with a noid light for feed then if thats ok try an injector..

Ok cheers \*\*\*\*\* \*\*\*\*\* said to me it could be vavle would u suggest compression testing at all or just try them two first
Automotive Expert
All three things compression test first...

Ok mate I’ll let u know compression then we go from they’re
Automotive Expert
OK

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