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The engine won't start or will be hard to start in cold weather unless you have the motor heater plugged in.

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Q: What happens when you have bad glow plugs?
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Related questions

Do all glow plugs need to be changed when one is bad?

no


Why would a diesel car struggle to start with new battery?

Possibly one or more bad glow plugs. try replacing your glow plugs.


1997 f 350 7.3 turbo diesel hard to start?

glow plug timer is bad or the glow plugs them selves are bad


How many glow plugs in a f-250?

there are eight glow plugs.


Does ford transit 2.5 diesel have glow plugs?

no glow plugs


1995 dodge ram 3500 does it have glow plugs or injectors?

Glow plugs and injectors are two different parts of two different engines. You may be referring to glow plugs or spark plugs. If you have a diesel engine, you will have glow plugs. If it is gasoline, it is spark plugs.


Why does a common rail Isuzu diesel turn over but won't start?

bad glow plugs or faulty glow plug timer module


Why does your Ford fiesta diesel take a long time to start?

Your glow plugs are not heating up. You may have bad glow plugs or relay. try turning on the key ( this should start the warming of the plugs and a light on the dash will come on letting you know it is ok to start if not the relay is bad) if no luck turn off the key and let it cycle again. if it is still difficult to start you may need new glow plugs.


Does your 2003 duramax have glow plugs?

Yes, all duramax's have glow plugs.


How do you replace glow plugs on a Fiat multipla?

where is the glow plugs on a fiat multipla


1983 mercedes 300 sd. you already replaced the glow control relay but it still makes a buzzing sound and you go to start the car. if you rotate the car key to start it nothing happens. what's the problm?

AnswerPerhaps when the glow control relay went bad, the contacts stuck closed causing the glow plugs to burn out. It happened to me, I had to replace all the glow plugs. It now starts every time. The glow plug relay could be bad, poor contacts on the fuse or plug contacts to the relay. Obvious reason is a week battery.


Does a 2002 Pontiac Bonneville SSE have glow plugs?

No, only diesel engines have glow plugs. It has spark plugs.