Engine turns over but will not start

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Hi Stevewalley7,

That sounds like the alternator is failing, boy when it rains to pours! whilethe engine is running check the voltage output,, here is a guide which can help you

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Let me know what you find

Best, Ken
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
AYOOLA
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  • 2002 VOLKSWAGEN PASSAT
  • 83,200 MILES
Have parked my car down for over a year and its not starting, I change the plug yet its not starting but I noticed the car plug get wet with fuel, and the timing belt is intact. What can I do. The battery is ok. Its rolling, just not starting
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
JACOBANDNICKOLAS
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Check to see if you are getting spark to the plugs. Also, if you are getting spark, check the fuel pump pressure.
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
STEVEWALLEY7
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Battery, alternator and starter are all good I took it to advanced and they did testing.
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
AYOOLA
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Thanks For the reply. Yes the plug get spark and the fuel pressure is ok. But I noticed the plug get soaked with fuel and the timing belt is ok too cos I checked it. But I noticed that when I tried to start the car the engine rolls very fast could it (that the engine valve have bend or what do you suggest? Thanks for being there
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
KEN L
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Hi Stevewalley7

It could be related to the crank angle sensor since that is the most relevant code, most things that says workshop are computer sensor related lets start by replacing the CKS (crankshaft angle) sensor.

Let me know what happens

Best, Ken
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
JACOBANDNICKOLAS
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Okay, if the engine turns fast, there is a loss of compression. Either bent valves or the timing is wrong. Please keep in mind, the belt may have jumped a few teeth and still look good, but be off. You need to check that again and tell me what you find.
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
STEVEWALLEY7
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It over heated on me and I took it in the guy fixed it and said I had a bad temp sensor and it has not ever heated and battery and check engine lights still on also the alternator workshop! Light goes off every once in a while but as I said I had tests ran and the starter battery and alternator are fine the mechanic I just took it to didnt check the codes or reset them should I just buy a scanner was thinking of getting a vag obd2 any advice helps thank you for everything
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
AYOOLA
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But can a parked car valve bent? What actually happened was that I misplaced the car key. A guy just decoded the car key for me. And gave me another keybut before the key got lost the car was working perfectly, though have parked it for over a year now. So dats why am asking that is it possible for a parked down car valve can it got bent? Or what do u suggest?
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
STEVEWALLEY7
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Has not over heated since*******
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
JACOBANDNICKOLAS
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If the engine is off, you can't bend a valve. I didn't know that. If the engine is turning fast, however, there can't be enough compression to start the engine. You are getting gas and spark because you said the plugs were wet and you had spark. I need you to check engine compression. If you need directions, go to our homepage under the diy section.

Let me know what the compression is in all cylinders. If you can and want, video tape it so I can hear what is going on. I could tell you right away if the compression is to low. Also, while sitting, you may have had a couple valves stick open.
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
STEVEWALLEY7
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Also which code shows crank shaft angle sensor?
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
AYOOLA
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Yes there is no enough compression for the car to start, the plug spark and the plug get soaked with fuel and the engine turn very fast. Dats exactly what's wrong. So what should I do
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
KEN L
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Hi Stevewalley7

The code 16706 rpm sensor, is the crankshaft angle sensor.

Please let me know.

Best, Ken
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
JACOBANDNICKOLAS
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Sir, if you get spark and fuel, have good compression, and the timing is correct, the engine has to run. It has no choice. You told me it turns fast, faster than it did before? If so, the compression is low.
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
AYOOLA
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What makes the compression low sir and what do they have to do?
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
CJ MEDEVAC
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Really cold where you are located?

The medic
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
AYOOLA
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No its not, am in lagos in nigeria and weather here is very hot
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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A stuck valve can cause low compression. If you check engine compression, I can point you in the right direcion. If I am wrong, then we need to check the timing. Since the car sat for so long, there is a chance that a few valves have stuck in the open position.

For directions on checking compression, visit our homepage under the DIY section. It isn't hard to do. You will need a compression gauge. Most parts stores will lend or rent them to you.

Let me know what you find. Also, if you can send a video and upload it for me to listen to, it may help.
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)
Tiny
CJ MEDEVAC
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If your valve guides are dry---when you turned the engine over initially, they may have stuck in the "open" position----spring's can't make them return to closed----just a thought

Do compression test

The medic
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Thursday, November 29th, 2018 AT 12:34 PM (Merged)

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