Skip the auto shop - Our mechanics make house calls

Q: Car will not start

asked by on

I have rebuilt the engine, marked and assembled everything correctly, installed new injectors. There's great spray pattern and great spark, is there possibly a sensor that will keep the engine from starting, or is there one attached to the front clip (still off the car) that would have the same effect, and last but not least could I have the crank 180 out?

My car has 184000 miles.
My car has a manual transmission.

A: Hello, thanks for writing in. If the cranks...

Hello, thanks for writing in. If the crankshaft position is off then that can keep it from starting. Prior to doing anything else I would do a compression test. If there is low compression then the valve timing is off. If the compression is fine then the crankshaft position sensor signal needs to be checked. If the computer is not getting a signal from the crank sensor then this will occur. It can also be an antitheft issue, but that is not very common. I would use a scan tool to check the crank signal once the compression test is done. If you want to have this no start issue checked, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have had to replace my fans twice with in tqo months time they keep burning up!!.what could be causing this?

Wow, that must be frustrating! I have a couple thoughts on your VW fan issue. First, I'm wondering if the fans are sourced from VW or are a lesser quality than original equipment. Secondly, I'd be interested to know...

Q: Car using too much fuel

Hi There, Code P0455 indicates you have a loose fuel cap or potentially a large leak in your evaporative emissions control system. I would suggest first trying to tighten the fuel cap as this is a common cause of this....

Q: Audi A4 engine not running smooth

The first thing would be to check the throttle body to see if it is really black from oil? If it is then you may have leaking oil seals in the turbo causing you to burn oil. This may also...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.