Question about 1997 Chevrolet Lumina

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Replace two bent push rods, and intake gaskets, car sounds like it will crank then starts over again sounding like it will start, but does not start.

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  • Chevrolet Master
  • 4,336 Answers

How did the pushrods become bent? You usually also will have VALVE damage, think about it... I suggest that you examine the timing chain. I suspect it has slipped, hence the push rod issue...

Posted on Aug 29, 2010

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Posted on Jan 02, 2017

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I own a 1968 Imperial 440 V8. The intake valve push rod of the #1 cylinder bent and was causing knocking noise. I replaced it and the motor ran fine. The #1 cylinder started missing. Again it was a bent...


bent push rods come from improper movement of the rocker and valve
This can be from an incorrect length push rod-- some v8 engines run different lengths for inlet and exhaust
from rocker arm jamming on the shaft or rocker ball
hydraulic cam follower pumping up and jamming the valve spring to a solid block
bent valve stem above the valve guide
valve spring Colette moved or misplaced incorrect rocker for that valve-- some engines run different length rockers for inlet and exhaust
what to do-- if this engine was running all right for some time then the rocker can be omitted. if the problem has been occurring since the cold weather the the oil may be too thick and not allowing the follower to leak down properly
check the follower or replace it , change to a lighter viscosity oil for the duration of the cold weather
unless you have had a recent head change or other mechanical work done the problem will be in those areas.

Feb 21, 2015 | Cars & Trucks

2 Answers

2001 montecarlo 3400 sfi. I just replaced lower intake gaskets reassembled engine now car cranks but wont start, and backfires. Had it running for 30 mins the other day but ran ruff


Is it possible some of the push rods are in the wrong holes ?
Are you sure everything is hooked up correctly ?
Vac lines, wiring, plug wires ?

Feb 21, 2015 | Cars & Trucks

1 Answer

Adjusting Timing Chain


Push rod,you have two different size,or firing order is wrong. The intake push rod are 5 3/4 inch long, the exhaust are 6 inches long,Disable the spark and crank the engine the sound should be smooth and even,if its not correct the push rods.If it is correct the firing order

Mar 15, 2012 | Cars & Trucks

1 Answer

My car blew the upper intake manifold gasket out so i replaced it and now it is flooding and won`t start


Im not sure what year, make or model car this is, the most common reason for a no start after an intake gasket chage is due to installing push rod in the wrong spot, this is mainly ture on the 3.1 and 3.4 and 2.8 and some other engines, the intake and exhaust push rods are diffrent sizes, i belive the exhaust valve uses a little longer pushrod than the intake, remove the valve cover and remove loosen the rocker arm and pull the first two push rods out, see if they are diffrent sizes, if so then install them in the correct location,let me know the result good day.

Apr 03, 2011 | Pontiac Bonneville Cars & Trucks

1 Answer

Sounds like a rod bent but didnt do that until after the intake gasket was changed


did coolant run into engine? if not did you disturb the push rods if this is a v8 ,v6 let me know

Feb 05, 2011 | Chevrolet Blazer Cars & Trucks

1 Answer

Changed relay it cranked drove not far replaced intake gasket drove note far changeed camshaft position sensor and wires spark plug ran but died again found fuse blown for 1fan under relay got running but...


sounds like the ignition module. Change that and see what happens. Is this by any chance on a 3800 or otherwise called a 3.8? if so try to push in the left side of the harness where it plugs in to the module just in front of the coil packs. while you are pushing have someone crank the car. if it starts and you let go and it dies then you know that is your problem.

Dec 31, 2010 | Chevrolet Impala Cars & Trucks

1 Answer

Random/multiple cylinder misfire detected


when u bent the push rod u might have bent the valve in the head ,by puting the longer push rod where it didnt belong it kept the valve open when the piston came up and the force of the piston on the valve bent the push rod,you will have to remove the head,hope this helps

Sep 20, 2009 | 2000 Pontiac Grand Am GT

1 Answer

We replaced intake gaskets and now its making a loud knocking sound


Good day
which intake gasket need you replace upper or lower, did you remove the push rods if so did you put the right ones in the right place. intake push rod will be marked orange and are shorter, exhaust push rods are marked blue. it almost sounds like you might have put an exhaust into a intake.
hope this helps please let me know if this is not the case and we can go from there

Cheers

Jul 10, 2009 | 1998 Chevrolet Lumina

1 Answer

2000 dodge durango wont cranks but wont start...


had same problems with cranking and wouldnt start , i had no spark not sure if you do but if not after performing tune up and still had no luck , i changed my camshaft position sensor under distributor and rotor , and she started right up . good luck

Mar 15, 2009 | 2000 Dodge Durango

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