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The heater doesn't always start. You can see spark. It blows smoke though. We are running diesel. And then sometimes when it is running, it suddenly stops burning and smokes.

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Try kerosene not diesel fuel .

Posted on Dec 27, 2016


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My mazda 626 has a strong potent smell coming from the exhaust

You don't mention what that smell is reminiscent of?

You don't mention the colour of the "smoke" and you didn't say whether the engine is petrol or diesel?

You don't mention whether the road behaviour/performance is normal?

White smoke is almost always steam or in the case of a diesel it could be an unburned fuel mist, grey/black is excess fuel and blue or grey/blue is burning oil.

Some steam is fairly normal until the engine and exhaust system is hot but excessive amounts could be one symptom of head gasket trouble. If the engine is drinking coolant and sending it through the exhaust as steam it will sometimes smell spicy.

Burning oil smells a bit like burned eggs in the frying pan.

If the car hasn't ultra-low sulphur oil and fuel the catalytic converter will convert sulphur traces into hydrogen sulphide - the bad egg gas...

Sep 27, 2017 | 1998 Mazda 626

1 Answer

Still trouble with my 2001 Ford Windstar after replacing spark plugs and wires. It always starts instantly though still running a little rough. Sometimes the power doesn't kick right in to climb

I would suggest you run a compression check on this engine and also have the coolant recovery tank tested for the presence of combustion gases with a gas analyzer, any gases would indicate a leaking head gasket. Any engine cylinder that is lower than 5% of the highest reading cylinder in pounds per square inch has a problem like a scored cylinder or leaking intake or exhaust valve seat.

Jun 18, 2012 | 2001 Ford Windstar

1 Answer

My truck is blowing white smoke out the tail pipe and I have no power wont go but I can idle around its a 2055 f250 turbo diesel, 300000 kms...litterally just started doing this a couple days ...

White smoke for a diesel means air in the fuel system. You will have to start at the engine, I start at the line going to the fuel pump. Get some fuel in a can, remove the line to the supply side of the pump and put another line from the can to the pump. If it starts and doesn't smoke , then you have to work your way back to the tank and find the spot that is sucking air. If it doesn't start the I would replace the filter first, check again. There is a possibility that the injector pump is bad, but these don't usually throw white smoke. They just make the engine have very little power or no start.

Sep 21, 2011 | 2004 Ford F250

1 Answer

2002 duramax smokes at stop sometimes ,also blows some only when taking off. doesn't use oil.

if this is a diesel motor nothing is wrong this is normal for a diesel

if it not a diesel what color smoke is it blowing???

Nov 14, 2010 | 2002 Chevrolet Silverado 2500HD

2 Answers

I have a 1998 chevy 2500 4x4 6.5 diesel pu.truck starts and seems to run normal ,maybe a little loud, i heard chevy diesels this year are louder than fords etc. blows a little white smoke at startup some...

the head gaskets are blown you can believe that anytime on any engine gas or deisel that you get oil in the radiator and there water/ antifreeze in the oil pan the gaskets and or cylinder heads are bad

Jan 20, 2010 | Chevrolet 2500 Cars & Trucks

1 Answer

My diesel is difficulty to start on cold cold days. it also will have a large amount of ssmoke after cranking

First, for poor starting from cold, you need to check the heater plugs, to do this, remove the wiring to each heater plug, then get a piece of wire/cable and get another person to help, you need to hold one end on the top of the heater plug, where the wire was connected, and get your assistant to flash the other end of your wire on the positive terminal of the battery, now, if there is a spark, then that heater plug is ok, if there is no spark, then that heater plug is faulty and should be replaced, do this to all heater plugs, and replace as necessary. Ideally , if just one is not good, then i would advise to replace all..
As for smoke from start up, all diesels will smoke on initial start up but it should clear when warmed up. However, if you have constant smoke, presumably black smoke, then you should check the air cleaner and hoses first, that the filter is clean and that the hoses are not blocked, split or collapsing when you give a bit of revs to the engine. The next step would be to check the fuel filter,if it has a drain plug, then undo that and see if the fuel is discoloured or you see any debrit coming out, it would be wise to change this , unless it has been changed recently. If you still have smoke, then you need to get the injectors checked, this can only be done by a diesel fuel workshop. Hope this helps

Jan 15, 2010 | 1997 Ford F350 Crew Cab

4 Answers

Smokes when I start it, smokes ALOT when I start it, it is embarrassing...... after it has sat for aprox 3-4 hours and I go to start it there is so much smoke that I wait for people to clear the area. The...

I have a similar problem - though my timing is right exactly where it should be

I'm wondering if it has something to do with the build up of carbon in the manifold... the smoke has a blue gray hue as well and defiantely smells like diesel

But I'm also zen with the fact that there's always going to be smoke upon a cold start up... it's the price you pay for a diesel... now if I can just get it back up to 50mpg instead of the 44 I've been getting I'll be happier

Sep 30, 2009 | 2001 Volkswagen Jetta TDI

1 Answer

Do i need to worry if i have a puff of black smoke from the exhaust when i first start my car. its black and only for a minit. also my car always smells hot like oily after even a short journey. would this...

65 thousand isn't much for a diesel engine.
I would not be too worried if it is only when you first start it up.

Diesel smells like oil at the best of times especially when it gets on your hands :) I have an old diesel engine (280,000 km never had the head off ) with no fancy turbo or anything on it. It used to blow a cloud of black smoke when I started it in winter time. It used to crank more before it started when it was cold too. The problem turned out to be 5 out of 6 of my glow plugs were broken. So it was just squirting more and more diesel into the cylinder before it generated enough heat to start. When it finally kicked all the fuel burnt at once hence the black smoke. There is a way to test your glow plugs (assuming you engine has them) with a multi meter. Or just get a mechanic to check and replace them as needed. Mine were about as complicated as changing a spark plug.

This is just my experience. I'm sure there are other reasons your can might be blowing black smoke.

Jul 22, 2009 | Ford Escort Cars & Trucks

1 Answer

Power lacking

Blowing smoke when starting is not a problem this accours on all diesel engines

Feb 16, 2009 | Mitsubishi Outlander Cars & Trucks

2 Answers


Welcome to the world of diesels....

Black smoke is produced when too much fuel is injected into the cyl. There could be several issues here, but I would start with running a diagnostic on your O2 sensors and MAS/MAP sensors.

I hope this helps

Aug 19, 2008 | Mitsubishi Passenger Cars & Trucks

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