Skip the auto shop - Our mechanics make house calls

Q: Change my timing chain. Got it on time from upper to lower chain tensioners and now I have no spark.

asked by on

I've decided to put a new timing chain in my car it's almost at 300,000 miles I noticed a grinding noise inside my engine bay so I had to go look into it I found the problem and it turned out to be my timing chain on the top when I took it off I put the new one back on with new guys and new tensioner I connected everything back together and now I have no spark I don't know what the issue is all the connectors are connected I'm not getting any codes from my Alltel scan tool I don't know what the problem is I've checked wires I check grounds I've checked for broken wires nothing I don't get it

My car has 285000 miles.
My car has an automatic transmission.

A: Hey there. I would recommend checking the c...

Hey there. I would recommend checking the camshaft position sensor as this sensor is located near the timing components, to be sure that it is plugged in correctly and working properly. I would also suggest checking the crankshaft position sensor just to be sure it is also plugged in correctly.

As you know, both of these sensors will impact whether or not the motor will produce spark. If either of these are not the problem, you may want to then begin testing the ignition coils for power to be sure they are providing current to the spark plug wires. If you would like to have a professional scope this out for you, a certified technician from YourMechanic can come to your car’s location to inspect the issue getting spark.

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

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: Changed our fuel pump, cps, distributer, and have checked all connectors, as well as spark but still not starting.

Hello. If the scan tool will not connect with the computer, then this is the first sign that there may be a computer issue. I typically start by testing the power supply to the computer and the ground. If it...

Q: How do I replace the driver's side mirror?

Hi there, The door panel may need to be removed. It can depend on accessories that were fitted from the factory. If it's something that you feel you need a hand with, to avoid damage, it would probably be best...

Q: How do I turn off my Lexus RX330 airbag

Hi there. There is currently no legal method to disable the airbag system in your vehicle. I understand the situation with the recalls being broadcast via the news and social media. However, the manufacturers are all working on the concern...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...