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A knocking sound in engine when trying to crank start but motor runs fine when push started

Posted by Anonymous on

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Hi, Anonymous I just loaned my brand new pair of listening ears to your local dealers chief technician so he could take your bike for a test ride and give you his professional opinion and estimate about your noise and repair cost. For more information about your issue, please visit the websites below. Good luck and have nice a day.

Posted on Oct 26, 2015

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6ya6ya
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Posted on Jan 02, 2017

v2iper
  • 150 Answers

SOURCE: 2001 H-D Road King engine knock

01road king..probably have 30 to 40 thousand on it...Sounds like cam chain tensioner..about the only thing that will go wrong with your bike. I will assume you have oil etc in it...If you have not been running your bike stupid then nothing mechanical will usually brake on a Harley. Once again I assume its stock. You don't have an oil light on so I'll put my money on cam chain tensioner has exploded or is about to.

Posted on Jun 14, 2009

  • 1 Answer

SOURCE: my 95 f3 will crank but wont start. everything was

  1. my cbr f3 will start up but but wont stay running for more than 20 mins. just put a new battery and rectifier regulator. can some one help me out

Posted on Jan 17, 2010

  • 67 Answers

SOURCE: neutral light off but motor is in neutral , bike won't start

Check your stand safety switch. Or your gear sensor. One of these is guilty!!!

Posted on Aug 18, 2010

czaa
  • 4514 Answers

SOURCE: Bike cranks over. Battery fully

the starter motor is probly du for a makeover-1st chec if contact cables r tite or corroded--its not hard to repair usually its somethin simple like brushes-getta a clymer book ther detailed for the whole bike--

Posted on Aug 21, 2010

  • 1 Answer

SOURCE: actually my bike is pulsar

same problem I was getting. I changed some named "Overlay" by bajaj technicians, but still comes that sound. Don't know what the f**k bike is this. Bajaj sucks

Posted on Apr 01, 2011

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My 2003 nisan bluebird had a faulty selenoid switch which was replaced . The engine cranked and run for a while.Now the engine refuses to crank and would sometimes crank and run only after some heavy


no crank
did you first try a live hot jumper cable crank? off a live donor car.
AAA Tow style.?
USING REAL JUMPER CABLES, not china tin foil?l
that be first. ok it always cranks , that means the battery is dead, not charged,or the alternator is shut down or you have phantom drains.

if the battery known good, and charged
we can hotwire the starter, if that works the starter is good.
if not bad.
if it hot wires ok that means the key line is dead.

this is how this is done,
if key line dead, wiggle that silly slushpump shifter lever or try cranking in neuTRAL.
OR HIT STARTER CASING WITH HAMMER 3 TIMES(3 FOR LUCK) CRANK NOW.?

THIS WORKS ON ALL AT CARS.

MY CAR: (X3)
m/t CAN PUSH START, IT , AND GRAVITY START IT.
AND SHORT THE CLUTCH SWITCH TO FIX BAD KEY LINE;.

If all this ok the ignition switch can be bad, or bad power distribution can not teach in 1min.

Jan 09, 2015 | Cars & Trucks

1 Answer

Car ran fine in the morning parked car and about 4 hours later i went to start and it started but there was a terible knocking and was running ruff, i tried to drive and about two blocks it stop and hasn't...


Does the engine still crank over at normal starting speed? If not, put a socket and wrench on the crankshaft pulley bolt and check that engine still turns freely. If the engine is seized, you know what that means-the terrible knocking was a main or rod bearing being bad, and seized up on the crankshaft. You would need a new engine.

If the crankshaft still turns free, be very prudent about putting money into it until you have determined the cause of the knocking. That doesn't sound good, could still be a bad crankshaft bearing.

Feb 11, 2014 | 1998 Ford Taurus

1 Answer

2003 chevy trailblazer motor knocking and throwing a small squeak


Henry, first need to determine if it's the actual engine that is knocking. Other accessories (water pump, steering pump, etc) could cause a knock. If the ECM knock sensor picks up a knock, regardless of where it originated from, will start to make timing and fuel adjustments which may cause it to hesitate or "sputter". You can take off the drive belt and start the engine. This will be the tale. If you hear the knocking, it's obviously in the engine and could be as bad as crank bearings or even the torque converter. Have you had any work done recently? If there is no knocking when the engine is running without the serpentine belt, you should now be able to narrow down the bad component by rotating each drive pulley until you find the damage..

Jan 16, 2014 | 1997 Toyota Tacoma

1 Answer

1999 Firebird knocking then stall


Well CB....a knocking noise coming from the engine is never good news.

Typically any real ugly noise that stops an engine from running is catastrophic. With the info you provided...low oil pressure, excess oil in the pan, knocking engine sounds and a motor that will now, not turn over...sounds like a bent con rod caused by a failed main bearing.

1999 v6 pontiac exploded dia-homgkn40kjilovpbxhhmhqzq-1-0.jpg
The engine overheated so the first suspect is the cooling system, some engine designs require that the thermostat be installed with the vent or bypass hole in a certain position. Failure to position the thermostat properly can cause engine overheating.

Another cause of the dreaded knock is "Knocking and pinging" caused by a low fuel octane rating, carbon deposits on cylinder walls or incorrect spark plugs... all not good. I think you would have noticed if your motor was knocking and pinging for any extended period of time.

Excess oil in the pan gets frothed up by the crankshaft slapping it around and aerates the oil which decreases its shear strength, which is what keeps metal parts from contacting directly together.
This could ruin the main crankshaft bearings.

First thing I would do is remove all the spark plugs (to reduce engine compression) and place a socket on the crank pulley bolt and try to turn the engine over...you should be able to spin the crank....if you can't get the motor spinning..it's seized up.

Good luck !

Mar 07, 2017 | 1999 Pontiac Firebird

1 Answer

1998 ford explorer oil pressure


Knocking in engine and low oil pressure usually means bad main bearings. May have been caused by bad oil pump or just worn out bearings due to high mileage. If this is problem needs engine or rebuild old engine.

Jul 15, 2012 | 1998 Ford Explorer

1 Answer

Bike wont start/crank over


starter solenoid sounds like it jamming knock itaround and

Sep 02, 2009 | 2000 Suzuki SV 650

1 Answer

18 HP tractor cranks but will not start


It sounds like you lost compression take out the spark plug and screw in a compression tester to check for engine pressure there should be 70 - 90 psi, if you can't buy one put you thumb over the spark plug hole and have a assistant crank over the engine push on the hole pretty hard, be careful not to get a shock from the spark plug wire while cranking the motor, if you feel pressure with your thumb reinstall the plug and connect the spark plug wire proceed to remove the air cleaner and pour a small amount (1 o.z ) of gas into the carburetor hole then try to start if it starts then stalls it is a fuel delivery issue. unscrew the carb float bowl to clear out any water or debree from it. the float bowl is round and is located on the under side of the carb, it should un screw by wraping a rag around it and turning it counter clockwise with a strong hand. also try cranking over the motor with your hand over the carb intake hole this will force any debree to get cleared out of the tiny passages in carb without having to full disassemble the carb this may also get the motor started for you if it starts remove your hand to allow the motor to breath and start/run.

Jul 16, 2009 | Craftsman 21 Hp 42" Deck, Ys 4500 Lawn...

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

4 Answers

Lifter noise


This is a very common issue with General Motors. I have never bothered to try and fix it because it is not causing any harm. It is because General Motors still uses a push rod motor and the cold oil causes it to knock a little until the oil gets warmed up.

Jul 24, 2008 | 1999 Chevrolet Silverado 1500

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