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Hi just bought a VW Caddy Diesel 2006 and having problems starting it in the morning. Changed glowplugs but not made any difference. Any suggestions?

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Hi there?
Have you checked if they have power goint to the glow plugs with the ignition on.
What is the temperature sensor reading in the morning, if it reads little bit worm then it thinks that the engine is worm and it wont power the glow plugs.

Posted on May 24, 2011

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Posted on Jan 02, 2017

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I have a 2005 Ford 6.0 diesel. Sometimes cranks but won't start, other times it cranks and starts. Can pull it off, and it will start and run fine. What could be the problem?


Since some of your starting problem can be when you need the glowplug timer to work. There is a power relay which supplies power to the glowplug timer. After the engine warms up, the timer has little to do with starting.

You could also need new, clean glowplugs. When you do need the glowplugs to work, they can only get power for a fraction of the time that the timer works. If the glowplugs are worn or dirty, the glowplugs may not heat sufficiently to ignite the diesel fuel.

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HARD STARTING IN THE MORNING [DIESEL ENGINE]


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.

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I have a 2004 ford f250 with a 6.0 diesel that is loosing water in the cooling system but is not leaking. There is no water in the oil. There is the possibility of a little steam in the exhaust like a...


Hello, If this is an Automatic with trans cooling lines, check the Dipstick for water droplets. It is possible to get antifreeze in the trans if the Radiator is leaking between the upper and lower chambers.

But for the most part, it sounds like the water is getting back into the heads. You also should check the Glowplug timer and the glowplugs to see if they have discoloration. The bad cylinders will taint the color of the glowplug. Glowplugs show running conditions just like sparkplugs do.

You will see bubbles in the Radiator tank when the engine runs. There are stop leak products but you have too much compression in a Diesel for them to work. About the best you can do is look at the Glowplugs and hope that all the problems are on one side of the engine. Then you only have to pull 1 head instead of 2.

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Had problems with vw caddy van starting when warm,...


2004 vw 2000sdi caddy van wont start some mornings you need to wind it over before it fires, immediately after it fires you can switch off ignition and it will start first time and continue to start all day. vw dealer says no fault codes present. gloplugs renewed, new battery,fuel problem? Has anyone come accross similar problem I

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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?
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I know for some models that Ford had another Diesel timer for the glowplugs for severe weather. This timer was meant to keep the glowplugs on longer.

I had an 87 Ford Diesel and the top wires on the timer were tight and clean. For some reason when I loosened them and retightened the wires the timer worked better.

Many truckers use a Diesel additive and usually the fuelstops have modified Diesel for cold climates. I understand there is a Cetane rating for Diesel and Premium Diesel may help.

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Hard Starting in morning


Do mean you have hard time communicating with a scanner at the OBDII connector, if so make sure you power at pin16 at diagnostic connector, also we have seen issue with glowplugs not working properly causing hard start when cold and starts fine after warm-up
You can check for glowplugs operation at initial key-of before cranking by checking for voltage at each glowplug connector with a multimeter.

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