Bent rod

Tiny
ROSE BAXTER STACHOW
  • MEMBER
  • 2008 CADILLAC DTS
  • V8
  • 2WD
  • AUTOMATIC
  • 135,000 MILES
One day the car suddenly started missing and emitting white smoke from the exhaust pipe. The problem was a fuel injector stuck open. It was replaced. When I picked up the car it was making a tapping noise in the engine which it was not making before. The mechanic told me that it was a bent rod and I needed a new engine and that would cost $4,200.00. I said I would get more estimates and get back with him. Another mechanic tells me that a fuel injector would not cause a bent rod and it didn’t sound like a bent rod to him. His guess was that something was dropped into the piston while changing the fuel injector and the piston was damaged. The car is running fine except the traction control is not working and it is shifting a little rough. My question is, can a faulty fuel injector cause a bent rod?
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Friday, September 11th, 2020 AT 1:04 PM

2 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good afternoon,

The simple answer is yes.

What happens with a bad injector is too much fuel get into the cylinder and when too much fuel gets in there, you cannot compress a liquid. When this happens, the weakest link in the chain is the connecting rod itself and it will bend. The noise is from it hitting the block every tine it moves.

https://www.2carpros.com/articles/engine-noises

Anyway, can you upload a video of the noise for me to hear?

Roy
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Friday, September 11th, 2020 AT 1:56 PM
Tiny
KEN L
  • ADMIN
I would like to hear the noise. Can you please shoot a quick video with your phone so we can hear the noise? That would be great. You can upload it here with your response.
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Friday, September 11th, 2020 AT 6:09 PM

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