V8 Engine Problems
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V8 Engine Problems
Hi,
4.7L 2UZ-FE
Engine rattles during hard acceleration. Sound like pistons or lifters. like what a timing chain rattle if the v8 had a chain.
This has been since the motor was factory new.
I use premium (93) mobile or shell gas
Lately I have noticed, rattling under slow acceleration up small hills while the a/c is on, and alot of rattleing when the engine is hot, a/c is on and hard accelerate.
56k on the motor
plugs changed at 30k
Also...
After sitting overnight, when I startup in the a.m. and put it into any gear while holding the brake i get a knocking.
The knocking is definately engine, sounds like lower engine, a lower frequency knock, not like tap or a rattle.
The severity changes depending on the teperature, worse during colder days.
I always let the the motor run for a few min, at least until the needle passes the "c" on the temp gauge before moving.
It lasts for a block or two, or about 2 stop signs, hearing it at each stop sign.
any ideas
thx
Tonedog513
4.7L 2UZ-FE
Engine rattles during hard acceleration. Sound like pistons or lifters. like what a timing chain rattle if the v8 had a chain.
This has been since the motor was factory new.
I use premium (93) mobile or shell gas
Lately I have noticed, rattling under slow acceleration up small hills while the a/c is on, and alot of rattleing when the engine is hot, a/c is on and hard accelerate.
56k on the motor
plugs changed at 30k
Also...
After sitting overnight, when I startup in the a.m. and put it into any gear while holding the brake i get a knocking.
The knocking is definately engine, sounds like lower engine, a lower frequency knock, not like tap or a rattle.
The severity changes depending on the teperature, worse during colder days.
I always let the the motor run for a few min, at least until the needle passes the "c" on the temp gauge before moving.
It lasts for a block or two, or about 2 stop signs, hearing it at each stop sign.
any ideas
thx
Tonedog513
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