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

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  • Cars & Trucks Master
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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

Posted on Apr 18, 2017

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Posted on Jan 02, 2017

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SOURCE: problems w/ 96 saab 900 se turbo

have you oil in the water? (radiater) if so you head gasket has gone and will nd replacing (big bucks) having a mix of water and oil gives you the sludge build up continuous over heating will certainly warp your head check your oil dipstick for a milky sludge instead of just oil

Posted on May 20, 2009

  • 396 Answers

SOURCE: what cause a hiace 1kz diesel turbo engine to over

first thing first does the radiator fan work properly if it does you move to the thermostat has it ever been changed take it off and put it in boiling water to see if it opens if it does check the water pump see if it has any build

Posted on Oct 28, 2009

  • 2187 Answers

SOURCE: im trying to compare fuel consumption on a hiace

if both engines are in good condition, with the same driver, I would say that the diesel would have better mileage especially for highway travel. You may maximize this further if you utilize the turbo, meaning relying more on the turbo rather pressing the throttle.

Posted on Jan 18, 2010

  • 361 Answers

SOURCE: The engine runs sluggish on

spark plugs are bad

Posted on Oct 07, 2010

  • 1 Answer

SOURCE: 2005 s40 cant get over

I've got the same problem. Just had it on the computer at the local and they told me it is the particulate filter, which they told me is the fuel filter.

Posted on Jan 10, 2011

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1 Answer

Diesel problems starting


I can give you some general Diesel knowledge. Diesels do not have sparkplugs. Instead they have glowplugs. The glowplugs can need changing like a sparkplug, but rely on a timer which heats the glowplugs to atomize the fuel. If the timer circuit does not heat the glowplugs you will get your problem. If the timer is good and your glowplugs are bad, you will get your problem. Each glowplug can be removed and tested by applying power with battery cables, but they can melt if not tested properly. Your mechanic should know how to do this for you. Remove the glowplugs and test cylinder compression to diagnose the engine.

Mar 10, 2017 | Ford Cars & Trucks

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My '84 Mercedes 300D Turbo diesel has become incredibly sluggish since i changed


that sounds like the fuel return hose on one of your fuel injectors. You should get about 2 ft of hose and replace all of them including the one in back that is capped and the one to the injector pump. Im guessing when this happens there is fuel everywhere?

Dec 31, 2012 | 1984 Mercedes-Benz Mercedes Benz 300 Class

1 Answer

My 1999 f250 superduty 7.3 starts right up when cold but hard to start after it is warm and surges while driving at 55 mph. it does have a 6 speed ******.


There may be more than 1 problem. The Timer for the Glowplugs adjusts itself for the temperature of the engine and surrounding air temperature. It is suppose to keep the timer going longer for a cold engine than a warm one. But it does need to heat the Glowplugs to atomize the fuel, then compression takes over.

If the Glowplugs have not been inspected lately, it would be a good time to do it. To test, use a jumper cable with care not to damage the threads of the Glowplug. Usually clamp one end of the jumper on the base of the Glowplug and briefly touch the top where the wiring plugs in.

The Glowplug can melt, but you want to see it glow in a short period of time and uniformily with all 8. Any that stay dark are bad, subpar will take longer than you have and will not fully atomize the fuel before they lose power from the timer.

Another problem can be the gating in the Turbo. There should be clean passages for the valving to seal when the Turbo closes. If the Turbo does not close, the exhaust compression may leak into the cylinder too early before a fuel charge is atomized. Since the Glowplugs are barely on for a hot engine, it will complicate starting.

Since your engine starts great when cold, fuel line integrity and the fuel system should not be a problem. Surging at 55mph is probably due to the Turbo.

Check your Vacuum levels at a convenient tap and see if the Vacuum bleeds off quickly or holds pressure for awhile.

Please rate my info and I hope I have been helpful.

Nov 14, 2012 | 1999 Ford F250 Regular Cab

1 Answer

Change out glow plugs


Hello, Its just like changing sparkplugs. First, you should check the timer for proper operation before blaming the glowplugs. The timer is the part where the wires on the glowplugs come from. Its' the Timers job to heat up the glowplugs and there is a Relay which activates the timer.

Once the Timer gets power from the Relay, it sends spark to the glowplugs and measures the amount of juice flowing through the glowplugs. When a predetermined limit is achieved, the Timer shuts down and sets a light on the dashboard that you can start the engine.

If you have a bad glowplug, that cylinder will not fire cold and the engine will miss, run rough , and spew black smoke out the tailpipe. A complete changeout of the glowplugs will solve the problem, but individual glowplugs can be tested and changed independently at a lower cost.

To test a glowplug, you can use jumper cables and apply voltage to the glowplug in limited amounts or you will melt the glowplug. Best to place the negative on the base and avoid the threads. Then touch the top of the glowplug and watch to see how quick it turns bright. Its a matter of comparison, and the darker the glowplug stays, the worse it is.

There is no adjustment on the glowplug, just swap them out and you will be fine. I hope my solution is very helpful to you. You can check the Timer with a voltmeter by removing a glowplug wire and hooking the hot lead from your meter and grounding the other wire on your engine. When you turn the key to the warmup position, the meter should briefly show power.

May 02, 2011 | 1984 Ford F 250

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Im trying to compare fuel consumption on a hiace 3ltr diesel turbo to a regius 2.8 ltr petrol


if both engines are in good condition, with the same driver, I would say that the diesel would have better mileage especially for highway travel. You may maximize this further if you utilize the turbo, meaning relying more on the turbo rather pressing the throttle.

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Problems w/ 96 saab 900 se turbo


have you oil in the water? (radiater) if so you head gasket has gone and will nd replacing (big bucks) having a mix of water and oil gives you the sludge build up continuous over heating will certainly warp your head check your oil dipstick for a milky sludge instead of just oil

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