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1994 Toyota Pickup knock knock

Tiny
RANDOM_HERO
  • MEMBER
  • 1994 TOYOTA PICKUP
  • 6 CYL
  • 4WD
  • MANUAL
  • 10,000 MILES
I was drive earlier today and all of the sudden my engine started making a knocking noise at about 2500 Rpm's. Then it started to get worse and it sounded like it was only one cylinder and it was coming from the top portion of the block. I was wondering if it was a valve the was hitting the piston. I just put in a rebuild engine in January of 2008 so I hope its not a huge deal.
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Monday, July 21st, 2008 AT 4:14 PM

4 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
AT idle rev engine does sound go along with the RPMS? Then take it up quick to 2000rpms let off quickly What happened?
Let me know
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Monday, July 21st, 2008 AT 4:24 PM
Tiny
RANDOM_HERO
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  • 3 POSTS
Yes it does go along with the RPM's. As the RPM goes up the knocking speeds up as well.
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Monday, July 21st, 2008 AT 4:34 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Knocking like someone is in the engine with a hammer? If so rod bearing failure.
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Monday, July 21st, 2008 AT 4:38 PM
Tiny
RANDOM_HERO
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  • 3 POSTS
Ya it does somewhat sound like that and it takes a second to start up too.
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Monday, July 21st, 2008 AT 4:45 PM

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