Question about 1992 Volkswagen Jetta

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Need to change glowplugs in a 1992 vw turbo diesel

Never done the job before , can you give me a basic rendown on how its done ???

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Glow plugs are located on head . you shoud disconect the wires and unscrew them when engine is cold .to install just make sure threads are clean and screw the new ones in.

Posted on Jan 27, 2009


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My hiace turbo turns over ..but is very sluggish until it heats up a bit..then seems to run thinking glowplugs..

not sure of what you mean
glow plugs are there to assist the instant start of the diesel engine
it will wind over well without the plugs operating but takes longer to heat the compressed air in the cylinders to fire the diesel being sprayed in
if it starts and is still sluggish to respond to the accelerator , that is a different problem to the glow plugs
I'm thinking low fuel pressure if common rail diesel and bad injectors squirting and not atomizing
have a proper diagnosis done by an accredited professional diesel repair shop

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1992 vw jetta 1.6 turbo diesel,what is the cylinder head bolt torque spec?

!st thing is get the revised head gasket (used on 1993 up) for this engine from VW or Felpro, always use new head bolts or a repeat failure will occur. Using the revised head gasket here is the procedure to torque the head down, it is done in stages. PLease go to this site and read the whole procedure.

Feb 07, 2012 | 1992 Volkswagen Jetta

1 Answer


Hello, The diesel engine relies on Glowplugs for the first start in the Morning or a cold start at anytime.

The Glowplugs themselves can be bad, but there is a Timer which determines how long the Glowplugs will stay on. Before the Timer is a Glowplug Relay which gives the Timer its power to operate. The Ignition switch provides power to the Glowplug Relay.

You disconnect a Glowplug wire, put on a test instrument (either a testlight or Voltmeter) and look to see what happens when you initiate a start. If the testlight lights and cycles a few times like a pulse, then the power supply is good. If not inspect the Timer and Glowplug Relay for continuity

If all the pulses seem to reach the Glowplugs, then most likely the Glowplugs are worn out. Test by removing then and connecting battery jumpers. Briefly touch the top terminal of the Glowplug with the Hot cable after grounding the negative cable on the base of the Glowplug, avoiding the threads.

You can melt a Glowplug. But if you find the Glowplug staying dark, then it is bad. Do this for all the Glowplugs and replace the bad ones. Remember the Glowplug only has the amount of time the Timer gives it to work. So if a few pulses do not make it Glow, then replace it. This should fix you up.

Aug 24, 2011 | 2005 Ford Expedition

1 Answer

On a 1992 ford diesel 7.3 L cold it start run good, but after setting 30 min. you go to start it again and it will not start. If you turn the key on and off about four or five times it will start with a...

It sounds like your Glowplug timer or the Glowplugs are bad. The reason that turning the Key 4 or 5 times helps, is that everytime you put the Key to RUN or START you are energizing the Glowplug timer and reheating the Glowplugs.

You can check the Glowplugs by removing them and remove at least 1 bank at a time. Get some jumper cables and put the NEG post on the plug without smashing the threads. Take the POS cable and touch the Glowplug till it starts to Glow. You can mess up and melt the Glowplug so watch it. BUT, as you test you will find the bad Glowplugs will not light or will take longer to light up.

This is the reason I said to take out 4 plugs at a time, minimum, because you need to compare bad and good, visually.

The timer is not as easy to test. It is a variable timer and the warmer an engine is, the less time it will work. Obviously if the Glowplugs are not Hot, the timer is cutting off too early. But you check your Glowplugs first. The Glowplugs help to give a Feedback loop which tells the timer to stay on.

The rough idle is because the glowplug is not hot or the compression is bad in the cylinder.

Oct 02, 2010 | Ford E-350 Super Duty Cars & Trucks

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My diesel vw transporter misfires/splutters on

Hi there,
I have just had my T4 2.4 cambelt and water pump done but the van does not run right unless the choke is out any ideas?
Many thanks

Mar 31, 2010 | 1999 Volkswagen Euro

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I have a 2002 vw jetta turbo diesel. I have had

you probably need to get the feul common rail tested, the diesel pumps are also known to give trouble on that model car

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2006 VW Jetta Diesel, Hissing noise when idleing or accelerating. Only seems to do it at lower RPM's, seems to have so effect on performance

I just went through this problem. Believe it or not their is a air conditioner for the turbo. Located on the back side of the turbo a real mother to change. Almost $400 for the part alone and another $200 for the install at the VW dealership. I recommed that you go to them and get it done instead of a back yard mechnanic or yourself. Al

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Diesel 6.0 running very bad and getting too hot

What you have described is a classic turbo air leak. Check the clamps & air lines from the turbo to the intake. If you do not find an air leak (you should be able to hear the air escaping) it will be a turbo problem. Unlike gasoline engines too much fuel in proportion to the air will cause the vehicle to run hot and also to smoke.

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