My starter engage and start but then it stop crancking the engine, but the starter spins but make a grinding noise in primary, it's on and off. I removed primary and saw it crank and then the Pinion gear resessed and doesn't make contact with the clutch ring gear. Bypass the started relay does the same. SO the selenoid it not pulling in all the time. Took the starter out and all test passed fine, it even crank no problem out the bike and Selenoid stay pull no problem, it's only Under cranking the engine that it fail. Selenoid looks fine. So what do I change, Selenoid kit or the whole selenois housing which will be less costly to buy an aftermakket whole starter.
Testimonial: "Bypass was tried and still failed. Got to be the selenoid failing under cranking because when the plunger stay pulled in it crank the bikes and start. P.s. For others, starter clutch was replaced last years and as per experience it's still working all fine."
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A bad starter will kill a battery real quick. If you can find a DC amp-meter compare it to factory specs, or similar car starters. A bad starter will make a grinding noise, or give false tries where the starter spins free without engaging the motor. Of course, a bad starter will not spin at all, just make sure the relay is working.
Chances are, the flywheel ring gear is damaged and the new starter drive gear just doesn't have enough to engage into so it spins and makes a grinding noise. If you can, try and turn the engine over a tiny bit by hand and then try the starter. If this allows the engine to turn over and start, this is probably your problem. Unfortunately, most engines come to a rest in the same spot(s) when you shut them off so the starter always has to try and engage in the worn area. The fix involves removing the transmission and replacing the ring gear...a big job.
THe starter engages the fly wheel and in the process turns the motor over to cause it to crank. The grinding can be a bad starter causing the gear to either not engage fully or not disengage. It can also indicate missing teeth on the flywheel from damage from starter. If the car cranks and grinding goes away it points to the starter solenoid not engaging properly.. pushing gear into contact with flywheel. I would recommend replacing the starter and you can replace it with a good mechanical knowledge and DIY.
From what you describe I would suspect that the starter is not fully engaging. I'm assuming that the grinding noise you hear when you try to engage the starter is INSTEAD of the engine cranking. If I assumed wrong, ignore the following:
Pull the starter, check the flywheel for excessively worn areas. Most of the time the flywheel is ok, it's just the starter. Any time you disassemble a starter you should replace the bushings and brushes. Never remove the starter with the battery still connected. Remove the negative terminal from the battery before you attempt to remove the starter.
if the starter is making grinding sound it not! however it could be loos and needs to be bolted up tight or there may be a bad power joint to the starter,, check for this also check all the earth leads off the engine to the battery, if its still grinding then its likely to be a dud starter you fitted,, the solenoid is not fully engaging the starter bog in the fly wheel teeth and it stopping short and then it spins up this is whats making the grinding noise, it can also make a right mess of your fly wheel ring gear,, so dont leave it to long to get it sorted out,
Is it when the engine first starts? It sounds like to me that the starter is getting stuck in the fly wheel. what happens is when you go to start it, the solenoid push's the gear out and spins the gear almost one full action, the grinding noise could be the starter staying engaged after the motor has starter but quickly comes out of it after driving out of it. just a thought.
Sounds like your starter is slow to disengage , but I would check with someone who is handy with cars , not necessarily a mechanic , just someone who can confirm your assessment and my suspicion. If that's the case , you might have to replace the starter. This problem could damage the ring gear on the engine which would be a lot of $ to have replaced.
1st thing is the battery 100% ??? try jumping it with another battery or car Poss to Poss and Earth to Earth.. and if still the same and the battery poles dont get warm then battery are ok ,,BUT CHECK it first
You say the starter motor is new and the starter ring is good but does it turn and the just spin and make a grinding noise if so the starter ring is worn at where it always stops which is about No1 cylinder
SO turn engine over by hand about 1/2 a turn and then try starting and if the starter turnes it over another 1/2 turn and stops again then the starter ring has to be replaced........ other wise you could have a big engine problem
BUT do all the above first and let me know how you go . Ron
From what u describe, I believe u have a starter and possibly a flywheel problem. When u turn the key to start the car, the starter gear engages w/ the flywheel, turning the flywheel, which turns the engine over. It sounds like the teeth of the flywheel and starter are worn, (they should mesh together smoothly) which would make the grinding noise u describe. If this is the case, the flywheel and starter would need to be replaced, and its a labor intensive job, as engine and trans. have to be separated to remove/install the flywheel. The rrrrrrr sound could be the starter gear spinning but not engaging. The starter gear extends on a shaft, then engages the flywheel. It is possible the gear isn't moving forward on the shaft, just spinning w/out engaging, making the rrr sound. So, I would recommend u remove the starter and have it tested (many parts stores will do this for free) and check the teeth on the gear to see if they are worn or broken. U will also be able to see a portion of the flywheel after the starter is removed, and u should check the teeth on it also. Let me know what u find, hopefully it's just a starter problem, and the flywheel is ok.