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Vw cold start valve

Polo 1.6 do not start in the morining but during the day when its hot it starts very well

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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DrElectrics
  • 199 Answers

SOURCE: vw polo electrical problem

If spark is good, it could be fuel pump or filter, or even your solenoid. Message me with more info. does it:
1. Try to start? - Fuel issue, or battery issue?
2. Click - Battery issue
3. Nothing? - Solenoid issue

Posted on Jun 05, 2008

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SOURCE: vw polo Broken timming Belt

Did you check the compression? If the compression is low then the most probable cause is the valves bent. Means the head has to come off.
If the compression is ok then have you got the HT leads on the right way or is the ignition timing ok. Check the resistance in the leads they have a tendancy to break down.

Posted on Nov 14, 2008

  • 119 Answers

SOURCE: MISFIRING ON CYLINDER 1 VW POLO 1.4 3CYLINDER

I have changed a few cylinder heads under warranty for this type of problem. The exhaust valve guides wear, this causes the exhaust valve to seat badly, giving low compression. if one cylinder compresion reading is more than about 50 psi below the others, then this warrants head removal. It is quite a job, due to the fact that the camshft id chain driven. If you are up for it then once the head is removed, poor liquid into the exhaust ports and see if it leaks out through any of the exhaust valves.

Posted on Jul 23, 2009

smhb1
  • 146 Answers

SOURCE: crankshaft sensor for vw polo where is the

Crankshaft sensor is located on the right side of the cylinder block behind or under the starter. It is fitted into the rear crankshaft oil seal hausing

Posted on Sep 12, 2010

  • 1 Answer

SOURCE: vw polo 1 litre has idling problems it keeps revin...

im also havin a problm with 99 polo 1.6 it revs high low high low and if da tank is below 1/4 it dies of while driving iv changed tank unit,trottle body, sensor nd after i changd tank unit da foat reads opsite way sum1 plz help me

Posted on Feb 18, 2011

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1 Answer

VW POLO 2003 STARTING PROBLEM


When it won't start check the fuel pressure, the pump may be sticking due to wear.

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Vw polo overheats


a cold hose indicates an air lock in the cooling system, if this is the case have it bled to remove the air lock. it could also be combustion gases leaking into your cooling system indicating a possible head gasket failure, your anti freeze can be tested for traces of combustion gases.

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Vw polo 1.2. three cylinder 04 plate when warm develops a misfire. turn off and start again cures the problem instantly. have replaced plugs and coil packs..........no difference. help thanks


vw polo 1.2 3 cylinder engines have a problem with the valves being to long and once they wear into the valve seats they use up the reserve travel in the hydrolic tappets and remain open when the valve lenthens when hot causeing missfires but shrink when engine is switched or causing a tempery cure

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Volkswagen Polo hot start problem


1) see the diagram
2) use the scanner and computer test, this will guide a exactly problem
3) reset the igntion timing, it doesnot matter if your system ha BCM, adjust to accoridng the specification manaufacturer, because the BCM runt according to the information recorderd. remember the BCM =CPU.
4) test the sensor cam/crank with VOM see the diagram.
5) the head gasket i blown, valve timing is incorrectly set. the exhaust system is blocked.
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Jul 18, 2012 | Cars & Trucks

1 Answer

In the morning or when my 1987 vw golf sits for a while (when the car is cold) it will start right up but then dies. i have to rev it and keep the rpm's up for a couple of minutes and as it get's warm it...


There are devices in the Bosch CIS-E system not functioning that may need replaced. Most commonly it would be the thermo-time switch. This switch is also a sensor telling the ECU whether your engine is cold or hot so it would compensate fuel delivery depending on temperature. An auxiliary air regulator also opens (more air) or closes (less air) dependent from the thermo-time switch signals. It's basically telling the ECU when it's a cold morning to supply a richer air/fuel mixture or not to when it's at operating temperature. There is also a cold start valve (fifth fuel injector) that could be sticking or leaking or simply not supplying fuel during cold start up. Again, this has a higher level of understanding and special VW tools to diagnose your fuel injection problem that should be left to a VW tech to work on. It could be dangerous because fuel is involved, a single spark from static electricity could ruin your day.

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wear r the sheer bolts on a vw polo 1;0 2001

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Daughter's R reg VW Polo has heater probs, only just started, fan working fine and temp gauge works normally but only blows cold air. What do you think could be the prob ?

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idle air control valve is going bad

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1 Answer

Vw polo 1.4 16v 2001


My polo 1.4i 2003 model
when i start the engines it does but starts to work only three cylinder i suppose.
What can i do?
Will be the plugs problems?
or the ignition coil?
Please tell what I have to do now.

Sep 28, 2008 | 2001 Volkswagen Golf

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