Is my starter motor dead?
Posted: Mon Aug 05, 2019 3:39 pm
Is my starter motor dead?
This is what is going on:
I'm nearly ready to drive on the road my S4 after years of restoration.
Engine has been fully rebuilt and runs well, but yesterday after many test of the engine that is assembled on the chassis and body, suddenly I see some typical sign of low in battery.
Battery is nearly brand new but maybe a bit weak due to check up of the electric wiring so charged the battery overnight; checked the voltage the day after , 13 volt ok.
Try again but the starter motor doesn?t' crank the engine, it's very slow and for sure not strong enough to fire the engine .
Headlights off, clutch pedal down , low friction as much as possible, but slow and every time at I try again, it's slower a bit.
The cord from the starter solenoid to the starter motor is a bit warm, but I can touch it, no problem.
The starter solenoid trip when you turn the ignition key , you can listen the "tock" noise, but no way to make the starter motor cranking the engine.
Earths are all connected and checked with voltmeter the continuity, they ring all.
At the input of the starter solenoid 12.58 Volt but it's 9.38 when under crank.
Maybe it's the pinion that it's engaged? ? I took the sparks away and tried to crank the starter motor, it's faster then before ( there is no compression) maybe enough to disengage the pinion.
Refit the sparks: same story and it's worst because now the starter motor is stuck!
Last chance: connect directly the starter motor with a spare battery, if the solenoid is fault, at least should should run free:
ready, set, go ... no way, stuck!
What I do?
1. Do I buy a new starter motor?
2. regular Lucas?
Or
3. the High torque Wasp ( do I have to reroute the wire from the usual location of the solenoid to the bottom where is the starter?)
please some comfort is appreciated, I believed to make My Elan running to go in holiday next week, mmmhhhh probably next year
saluti a tutti
Paolo
This is what is going on:
I'm nearly ready to drive on the road my S4 after years of restoration.
Engine has been fully rebuilt and runs well, but yesterday after many test of the engine that is assembled on the chassis and body, suddenly I see some typical sign of low in battery.
Battery is nearly brand new but maybe a bit weak due to check up of the electric wiring so charged the battery overnight; checked the voltage the day after , 13 volt ok.
Try again but the starter motor doesn?t' crank the engine, it's very slow and for sure not strong enough to fire the engine .
Headlights off, clutch pedal down , low friction as much as possible, but slow and every time at I try again, it's slower a bit.
The cord from the starter solenoid to the starter motor is a bit warm, but I can touch it, no problem.
The starter solenoid trip when you turn the ignition key , you can listen the "tock" noise, but no way to make the starter motor cranking the engine.
Earths are all connected and checked with voltmeter the continuity, they ring all.
At the input of the starter solenoid 12.58 Volt but it's 9.38 when under crank.
Maybe it's the pinion that it's engaged? ? I took the sparks away and tried to crank the starter motor, it's faster then before ( there is no compression) maybe enough to disengage the pinion.
Refit the sparks: same story and it's worst because now the starter motor is stuck!
Last chance: connect directly the starter motor with a spare battery, if the solenoid is fault, at least should should run free:
ready, set, go ... no way, stuck!
What I do?
1. Do I buy a new starter motor?
2. regular Lucas?
Or
3. the High torque Wasp ( do I have to reroute the wire from the usual location of the solenoid to the bottom where is the starter?)
please some comfort is appreciated, I believed to make My Elan running to go in holiday next week, mmmhhhh probably next year
saluti a tutti
Paolo