Skip the auto shop - Our mechanics make house calls

Q: 2001 Chevy Blazer distributor install.. it is at top dead center and the rotor lines up with the 6 but is not seated all the way.

asked by on

2001 Chevy Blazer distributor install.. it is at top dead center and the rotor lines up with the 6 but is not seated all the way. Why?

My car has 188305 miles.
My car has an automatic transmission.

If you are using the marks on the harmonic balancer to find TDC, occasionally the balancer will have shifted (the rubber bond breaks) causing the timing mark to be some degrees off. Consequently, the crankshaft is not really at TDC and, of course, the camshaft is not in the position you think it is. The result is the distributor gear won’t engage. If that is not the cause, examine both gears and simply attempt to re-position the distributor but if it does slide in but you can’t get the rotor to line up that is a sure sign that the markings on the balancer have shifted and the balancer is the problem. To obtain service on this please request timing mark inspection - possible harmonic balancer issue and the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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!
  • Home
  • Questions
  • 2001 Chevy Blazer distributor install.. it is at top dead center and the rotor lines up with the 6 but is not seated all the way.

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: Won't shift into 3rd gear and bogs down after 2005 Chevy Blazer

This sounds like you may have internal transmission issues on your 2005 Chevrolet Blazer. It could be caused by low transmission fluid, a faulty shift valve, or possibly burned clutches. Smell the transmission fluid. If it smells burnt, then you...

Q: The car loses acceleration intermittently

Hello. It would be recommended to have the vehicle looked at by a certified mechanic. They should have the specialty tools and techniques to identify the problem and repair the situation correctly, and avoid any damage or injury. This could...

Q: my harmonic ballencer pully has rubber formed all the way around the pully, theres no grooves for the belt.

The Harmonic Balancer consists of an inner hub, a rubber ring, and an outer ring all bonded together with adhesive. Sometimes in very old cars, the adhesive gives up and the pieces separate. I'm going to guess that you have...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...