Replaced 305 with 350. Rebuilt throttle body. During normal driving speed, car shimmy, shakes and rattles. At higher rpms, seems to smooth out some. Idles fine. Cranks fine. I feel like it may be a possible vacuum leak. Any suggestions please?
2007-01-16 04:51:27 · 3 answers · asked by slowboy 2 in Cars & Transportation ➔ Maintenance & Repairs
If you had a vacuum leak, it would idle like ca-ca.
Sounds more like ignition problem.
I suggest removing the distributor cap and checking the rotor and inside the cap for damage.
Change spark plugs too.
2007-01-16 04:59:46 · answer #1 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
You do not say what year the 350 is ??? If its the type with the dist.on the end of the cam shaft ( tucked in behind the water pump ) If any moisture get on the dist its toasted . These dist are so touchy that at the dealer I work for we sell the dist with the water pump or cust is made aware that if he does not replace the dist at time of replacing the water pump it not our fault when it goes out.Good luck hope I helped.
GM tech for 20 years
2007-01-16 05:10:24 · answer #2 · answered by Rudedude 4 · 0⤊ 0⤋
okay here's the real answer
if you are have a vacum leak it you can find it by spraying a little
ether or WD-40 on the vacum lines in question if engine idles faster
you have a general idea where to start looking.this works everytime
use caution when spraying fluid around a running car use a pair of goggles
da skinny from kenny
2007-01-20 03:46:08 · answer #3 · answered by kenny m 2 · 0⤊ 0⤋