Cold start

Tiny
MPARRY
  • MEMBER
  • 2007 RENAULT TRAFIC
  • 2.0L
  • TURBO
  • 2WD
  • MANUAL
  • 100,000 MILES
After having a new starter motor fitted on starting now have loud knocking noise until the engine is warm it sounds like it is burning excess fuel off. I did not have an issue before motor fitted and van been back three times they now assume it is a sticking injector, but I am dubious I have used the same garage for fifteen years. Any information would be appreciated.
Wednesday, July 20th, 2016 AT 3:13 PM

5 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Have you had the oil pressure checked, is the knock rhythmical that is at engine speed or random?
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Saturday, July 23rd, 2016 AT 2:13 AM
Tiny
MPARRY
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Random but only for 3to, 4minutes I assume garage av checked obvious it does sound like fuel issue like a mini explosion of fuel u can see engine shaking wen clanging sound appears I assume there a fuel management system cud this b an issue
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Sunday, July 24th, 2016 AT 4:55 AM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
It could. They should do a complete deep scan of the computer for codes. They should also check the oil pressure and level.
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Tuesday, July 26th, 2016 AT 10:08 AM
Tiny
MPARRY
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  • 3 POSTS
Nothing shows on diagnostic even while noise is there due in again to garage next week if it's a oil pressure issue would it not happen continuously
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Tuesday, July 26th, 2016 AT 1:41 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
If a bearing problem I more than likely would, but if there is a problem with the oil pressure regulator this can come and go at low revs cold until the reg warms up it may be binding up, this can be seen with an oil pressure test.
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+1
Saturday, July 30th, 2016 AT 5:04 PM

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