Question about 1998 Chevrolet Tahoe

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Motor knocks can i pull the crank out with the motor in the car

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Yes just jack up the motor

Posted on Feb 02, 2009

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2 Answers

I have a 91 caprice make knocking noise when I crank it


if auto , check the flex plate at the torque converter for cracks
check ring gear for burrs
possible big end bearing
possible piston or broken ring
test by removing a plug and cranking it replace the plug and go to the next plug
repeat the process until the knock stops with that plug removed

Apr 23, 2015 | 1991 Chevrolet Caprice

2 Answers

I have a 2001 cadilac deville that has a wicked knock in the engine. it is a rod knock (from the sound) so i figure my options are to change the engine, or change the rod ect. I wanna know if the engine...


Thats going to be a tricky pull. you can actually do BOTH methods fro pulling that motor. Which ever is easier for you would be better.

As far as the rod knock. Rod knock simply means that the rod bearing has spun and is no longer a smooth surface. potentially, you could pull the motor and replace just that rod and bearing if the crankshaft was unaffected. the majority of the time, more work needs to be done. I think in this case, it may be cheaper to remove the motor and replace the crank and bearings. A replacement used motor will probably run about 1k if you can find one at a yard.

Apr 07, 2014 | 2001 Cadillac DeVille

1 Answer

208cc motor is knocking and the connecting rod and piston seem to be fine


So you have raised a problem with a car or truck, and its engine has pull cord?

Dec 21, 2013 | Cars & Trucks

1 Answer

My 96 chrysler lhs has a knocking/rattleing sound coming from the bottom engine and as you push down on the gas the faster you drive the louder it rattles


if the noise is coming from the bottom end of the motor then you have either bad connecting rod bearings or bad crank bearings.if when you snap the throttle you hear a double knock then its connecting rod bearing if not then its crank bearing.a collapsed piston can sound low in the engine and its usually a dull knock noise.if you have the engine running and the noise is there and you pull off one plug wire at a time(and reconnect it after checking) and the noise goes away or mostly goes away with the wire unhooked then the cylinder that the noise changed is the cylinder that has a bad piston.

May 25, 2011 | Chrysler LHS Cars & Trucks

1 Answer

Car starts to knock then turns off and wont start


it depends if the knock is from the crank shaft that motor is finished it needs a crank and barrings
and that's expensive you might want to have a mechanic listen to it because it sounds to me the motor starts to knock and then seizes up

May 01, 2011 | 2001 Pontiac Grand Am SE

1 Answer

Knocking in the bottom of ford 5.4 liter engine


If you hear it knocking no bearing replacement is going to fix that long term. Its best to pull it, the crank shaft will have to be turned or polished and or replaced, weather its a rod or a maine, and posibly line boared if its a maine thats knocking. Do it right and pull it.

Apr 10, 2009 | 2001 Ford F150 Styleside SuperCrew

1 Answer

Knocking sound came from my 2ltr leganza motor.


if u need new engine 2.2 would require computer, harness and not sure about trans its not worth it stick with original size if car still cranks/turns motor may still be repaired but if u cant turn crank shaft its done. check oil condition and level also might be good idea to inspect timing belt and tensioner may not have been adjusted or installed correctly also may now have a bent valve. when u know what ur in for then make decision weather to fix or scrap/donate

Apr 01, 2009 | 1999 Daewoo Leganza

2 Answers

Motor knocks


Hello;
Before you start to pull the crank out, check your oil pressure via an independent gage. Then if you have around 25-30 psi gage, drain some oil out. Put a quart of Marvel Mystery Oil in and top off . Change oil filter. Drive the truck for a few miles. Change the oil and filter. This should start to break away the sludge that is built up.

You may need to do this up to 10 times before you can go 3000 miles on an oil change.
Now if the oil pressure is extremely low, yes you can change the crank in chassis. I have done it in a pinch before. It is much easier to pull the engine and put a crank in. If the crank is bad, you also have a rod that is bad. You also need to clean all the parts or emminent failure will occur.
I would also change the knock sensors on your truck as well. Hope this helps. Rate me high.
Thanks;
Rich
RPM Northwest

Feb 02, 2009 | 1998 Chevrolet Tahoe

1 Answer

ROD KNOCKING BUT NO LOSS OF POWER


if you want to replace just one rod you should go ahead and rebuild the engine.you say the motor is still running fine?if you can pull the oil pan off you might be able to identify which rod is knocking,if so you may be able to replace just the bearings on that particular rod.that is if the crank isnt scarred.the only way to know if the crank is scarred is to pull the pan off.as far as i know,the only way to get the pan off is to pull the motor,unfortunatlly.one other al ternative is to buy a junk yard motor.which isnt a bad idea,if you have to pull the motor out anyway.

Jul 31, 2008 | 1999 Chevrolet Camaro

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