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Question: 1999 Chevrolet
Cavalier, miles: 89,200. I drive my car back
and forth to work, no long trips. I started
to miss-fire slightly. I keep driving it and
the problem got worse. So I took it in to
have the engine scanned, The repair shop
called me to tell me the cam had gone flat.
Have you ever heard of this before? I
thought new engines had roller bearings?
Answer:
Yes, it is not very common but it does
happen, even on roller bearing valve train
engines. One of the problems is the metal
that has been ground off the camshaft and is
in your engine. Slowly wearing down internal
engine parts. Evaluate the cost of the
camshaft to the cost of a new engine. You
might be money ahead.
Question: 2002 Toyota
Camry, miles: 135,000. Hi, I have three kids and
a single Mom, so I don't have much money. I use
the internet to gather information to help me
save. I was driving my car when all of the
sudden it stopped. I had it towed to a garage
and he told me the camshaft broke off and it
would be $1,200.00 to fix it. Can this be right?
Answer: Well, stranger
things can happen. If the camshaft is broken it
will be the first one that we have ever heard
of. Have it double checked, it sounds more like
timing belt or maybe a water pump the has locked
up and caused the timing belt failure.
Question: 2003 Nissan
Frontier, miles: 115,000. Hello, my truck is
having a problem. When I accelerate the truck
Backfires through the intake manifold. I changed
the Plug wires, Plugs and fuel filter but it
still does it. Any suggestions would be
appreciated.
Answer: Remove the
valve cover to inspect for a exhaust lob on the
camshaft that has gone flat. If this problem is
present it causes the combustion gases to back
up into the intake, causing the popping through
the intake noise you describe.
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