stunned
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Senior User
Joined: Jan 2009
Posts: 240
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stunned
alright so today i was crusing on the freeway at 70 running about 2100 rpm then all of a sudden my truck starts shuddering real bad for about 30 secs then stops so i get off at my exit stinning at the stop light i roll my windows down. i gave it a little gas to move foward a little my truck makes a horrible ticking noise. the llight turns green it starts ticking really bad when i hit about 18 1900 and above really bad so i lay off the gas till i find a place to stop. get out pop the hood give it a visual with it running everything looks ok rev it up no noise. all the way home nothing. the noise was bad. have any of u guys had or heard of anything like this. sorry this is so long but i wanna find out what i should do. i wanna pull and valve covers off the cheack everything should i adjust the vavles while im at it
Elder User
Joined: Apr 2003
Posts: 673
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From: Maryland
I had the same sound out of my 351 a few years back. Turns out I sucked down a big chunk of carbon off one of the intake valves, made a horrible racket (deep, like rod knock). I disassembled the engine and only found it after sleeping on it for a night. The carbon chunk was in the quench area of the combustion chamber and being hit by the piston on every stroke. The associated piston had a witness mark on it. Running some ATF down the carb prolly would have fixed the problem without all that wrenching. Who'd have thunk it...
Posting Guru
Joined: Jan 2009
Posts: 1,321
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From: Mattawa Washington.
injector knock, can make similar sounds, I would pull the codes and if nothing while running compression tests take the injectors in to be tested. most places can test them in an hour or two..
