Adjusted the rocker arm incorrectly now the engine wont start what do I need to do at this point to fix the problem
ON THE CHEVY 350 IF THE VALVES ARE TO TIGHT AFTER ADJUSTING IT WILL NOT RUN BECAUSE THE VALVES ARE NOT CLOSING. HOPEFULLY YOU DID NOT TIGHTEN THE ROCKERS ALL THE WAY DOWN .IF YOU DID YOU MAY HAVE BENT VALVES OR PUSHRODS. THE PROPER PROCEDURE BEFORE START UP IS TO ADJUST ROCKERS WITH EACH CYL ON COMPRESION STROKE. BACK OFF ROCKER NUT UNTIL YOU FEEL PLAY IN ROCKER TIGHTEN THEN 3/4 TURN. AFTER ENGINE IS RUNNING YOU CAN DO FINAL ADJUSTMENT WITH THE ENGINE RUNNING. BACK OFF NIT UNTIL YOU HEAR TICKING, THEN TIGHTEN 3/4 TURN IN 1/4 INTERVALS. HOPE THIS HELPS !! BILL
If you adjusted them wrong, maybe the valves aren't closing fully, so no compression. you need to back the adjusters off and start again using a feeler gauge to set the clearance to the right setting. intake an exhaust are usually a different setting, check the 'net or a repair manual, good luck
Back off on all the rocker arms and check to make sure you didn't bend any push rods then make sure you are starting on #1 Cylinder and readjust, when it starts you can finish the adjustment by backing off rocker arm nut till you here it TICK than tightentill TICK IS GONE. I do not have info on the fireing order for primary adjustment but you should be able to find on line complete instructions, Go to ASK.COM and ask for Chev 350 Valve Adjustment their are several to choose from and even YOUTUBE Videos on it.
SOURCE: Engine Bolt Torques- 2005 Chevy Impala/3400 Engine
Head Bolts
Step one 37 ft lbs then tignten 120 degrees more
Rocker arms
Step one 11 ft lbs then tighten 90 degresss more
Upper intake
89 inch lbs
Lower intake
132 inch lbs
SOURCE: need torque specs
Valve Rocker Arm Bolt 19 N·m + 30° (14 lb ft+ 30°)
A GM dealer shows me another source, which says 32 Nm (24 lb-ft). Not sure which one is right but they screwed up my car.
SOURCE: rocker arm adjustments 5.7 vortec
as long as the oil system was primed and the lifters are full tighten each rocker down until it is snug enough that you can't move it with your fingers.put the valve covers back on and run the motor for a couple minutes. then run the motor with one of the valve covers off at a time. it can be a little messy but this is the best way. as the motor is running loosen each rocker nut until you hear chatter then tighten it back down until it stops plus one quarter turn. this is the best way I know to make sure they are just right.
SOURCE: how to adjust rocker arms on 05 chevy equinox
already ?
the standard procedure for adjusting rocker arms on some cars is to adjust them with the engine running. but this is messy.
loosen the nut until you hear clicking n tapping noise, stop.
now turn the nut Tighter a little at a time until you hear the noise stop, then turn the nut 1/4 turn more and move on to next rocker.
this only applies if you have pushrods.
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