SPONSORED LINKS

Not starting backfire intake

Tiny
SAEED.ALMEQ
  • MEMBER
  • 1995 LEXUS LS 400
  • 180,000 MILES
Engine cranking clockwise and backfire from intake, engine while cranking is trying to rotate counter clockwise?
Timing belt replaced
Spark plugs and wires ok + there order
Tuesday, July 24th, 2012 AT 11:25 PM

10 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Sounds like a timing control failure. Could be failed timing belt.

Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, July 25th, 2012 AT 12:17 AM
Tiny
SAEED.ALMEQ
  • MEMBER
  • 17 POSTS
Checked timing belt twice its on the notch?
Was this
answer
helpful?
Yes
No
Wednesday, July 25th, 2012 AT 8:09 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Start with a compression test and fuel pressure test. Get back to us with the results

Roy
Was this
answer
helpful?
Yes
No
Wednesday, July 25th, 2012 AT 11:38 AM
Tiny
SAEED.ALMEQ
  • MEMBER
  • 17 POSTS
Checked compression all is above 170psi
Was this
answer
helpful?
Yes
No
Friday, July 27th, 2012 AT 7:41 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Ok, fuel pressure?

Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, July 27th, 2012 AT 9:28 PM
Tiny
SAEED.ALMEQ
  • MEMBER
  • 17 POSTS
Yes fuel pressure is 50+ psi
Injectors firing
Crank +cam sensors checked
No check engine light, no codes
Forget to mention that cylinder no1 has no compression at all
Was this
answer
helpful?
Yes
No
Friday, July 27th, 2012 AT 9:51 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Bingo, I bet you have a timing belt issue. If not, then you may have a burned valve.
Roy
Was this
answer
helpful?
Yes
No
Saturday, July 28th, 2012 AT 7:51 PM
Tiny
SAEED.ALMEQ
  • MEMBER
  • 17 POSTS
Hi roy
i rotate the crank several times and check timing marks there ok
but im thinking that timing belt is for a 99 ls400
Was this
answer
helpful?
Yes
No
Saturday, July 28th, 2012 AT 9:02 PM
Tiny
SAEED.ALMEQ
  • MEMBER
  • 17 POSTS
And what I should do with the cylinder that dont have comperession?
Was this
answer
helpful?
Yes
No
Saturday, July 28th, 2012 AT 9:04 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Inject air into the cylinder to find out where the leakage is coming from. Then you will have to remove the head and perform the needed repairs.

Roy
Was this
answer
helpful?
Yes
No
Sunday, July 29th, 2012 AT 2:16 PM

Please login or register to post a reply.

Related Engine Not Running Content

How to fix an engine that wont start
VIDEO
How to fix an engine that wont start
Instructional repair video
Engine Not Starting - Top 3 Easy Steps
GUIDE
Engine Not Starting - Top 3 Easy Steps
Over the past 20 years on 2CarPros we have identified the top three problems that are easily fixed. This can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE

Sponsored links