Is the loud noise an intermittent squeak? My 1998 ZX2 had a very annoying loud squeak that turned out to be due to the use of the wrong PCV valve. The ZX2 2.0L engine apparently comes in SOHC and DOHC versions and if you use the PCV valve intended for the SOHC engine in the DOHC engine, you will get the squeak. Before I knew this, more than one garage has installed the wrong one on my ZX2.
Tuneup + water pump + timing belt change = $801
Most likely needs a tuneup done. Check the timing and change the normal tuneup part.
check for other possibilities, tuneup, ignition
A general tuneup would include plugs, (points it the car is old), change air filter, check fluid levels, clean battery of any detritus, (set ignition timing is you've changed the position of the distributor while doing maintenance.)
TuneUp Utilities was created in 1997.
what should timing be set at on 72 1 ton 350 dump has 350 4 barrel carb I believe 4 bolt main
If a Vortec engine shakes or rumbles at low RPMs it likely needs a timing adjustment. It would also simply need a tuneup.
New spark plugs, check the wires to see if they need to be replaced, new air filter, new fuel filter, oil and filter. That's about it, unless the bike was running bad before then more needs to be done. Like syncro the carb's, and timing. Have the timing belts been changed, pick-up's, thermostat, coolant, fan temp sensor, ( it usually needs to be replaced), that's about for now.
Check the timing on your vehicle ,but there's more on why your getting a misfire
Tuneup Utilities is a software system that boosts your PC speed, repairs your registry and extends battery life. This can be downloaded from TuneUp Utilities online.
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What is needed to tuneup a 1998 toyota avalon xls?