SPONSORED LINKS

Cranks but does not start after replacing the timing belt

Tiny
DANIEL LEE FLOWERS
  • MEMBER
  • 1991 LEXUS ES 250
  • 2.5L
  • 6 CYL
  • 2WD
  • MANUAL
  • 18,800 MILES
Okay, so I have a problem with my car; it will crank over but will not start. I've replaced the timing belt so I know it's not broke. I've replaced the coil DCM, the fuel pump, plugs wires, cap and rotor it was running fine up until I changed the timing belt. I don't know if I broke a wire. I've checked all the fuses. Any suggestions?
SPONSORED LINKS
Friday, January 29th, 2021 AT 4:57 AM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

I would start by checking the compression to verify the timing belt marks to be sure the belt alignment is correct.

https://www.2carpros.com/articles/how-to-test-engine-compression

I attached the timing marks for you to be sure.

https://www.2carpros.com/articles/how-a-timing-belt-works

Did you verify fuel pressure from the fuel pump?

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Fuel Pump
Pressure
No vacuum to regulator .................... 38 - 44 psi (265 - 304 kPa)
With vacuum to regulator .................... 33 - 37 psi (226 - 265 kPa)

Did you verify the spark to the plugs?

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Roy
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, January 29th, 2021 AT 5:23 AM
Tiny
DANIEL LEE FLOWERS
  • MEMBER
  • 4 POSTS
Fuel pump, ignition coil injectors, ECM module, cap and rotor are all new. It was running fine until I changed timing belt. I put it back on exactly how it came off. The only reason I decided to change belt was because it was starting to make noise. I was thinking it might have something to do with security system but can't seem to figure it out. I will pull it back apart to double check timing marks.
Was this
answer
helpful?
Yes
No
Friday, January 29th, 2021 AT 12:48 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I would check the compression first. If it is low, that will confirm it.

https://www.2carpros.com/articles/how-to-reset-a-security-system

Roy
Was this
answer
helpful?
Yes
No
Friday, January 29th, 2021 AT 1:20 PM
Tiny
DANIEL LEE FLOWERS
  • MEMBER
  • 4 POSTS
I will check that here in a few.
Was this
answer
helpful?
Yes
No
Friday, January 29th, 2021 AT 4:19 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, we will be here for you.

Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, January 29th, 2021 AT 4:24 PM

Please login or register to post a reply.

Related Timing Belt Replace/Remove Content

Sponsored links