Slow cranking speed on 3sge

[biggo]

Car - Toyota Carina TA63

motor - Gen1 3SGE

use - Stubby holder

problem - Wont crank fast enough to register on adaptronic

occurs/started when - the big bang happened

personal situation - long story but bare with me.

3sge with w55, stock flywheel,2sc starter and dual row spigot bearing. Engine has been rebuilt with fairly tight clearances. Turns ok by hand tho.

Starter circuit goes like this, big cable to battery terminal, push button to solenoid cos i cant figure out the original starter circuit. Its about as basic as shepherds pie.

Now when i go to crank it, the stupid thing only turns like 90* degrees. Push the button again itll turn another 90* and so on. Its starting to shit me, ive added another ground wire to the bellhousing, power came from a running motor (13.5v according to the adapt) and now im lost.

Are the solenoid contacts fecked?
Supply wire borked?
Does the starter/flywheel teeth need machining?

Will try a differnt supply wire tomorow. Does anyone else have any ideas?

[Golberg]

Try running a relay in between the push button and the solenoid to ensure its getting ample power.

Seeing as its turning the motor it sounds like it is engaging properly.

So does it engage - motor turn 90* - solenoid pop back out all whilst keeping your finger on the button?

If so that sounds to me like its not getting enough power, which either means your power source is crap, or the starter is fucked and is drawing too much current.

[biggo]

im leaning towards power source

Solenoid engages - turns motor 90* then tries to turn it again but makes funky noises. Fair sure its not poping out

[ke70dave]

so i assume the spark plugs arent firing to slow it down? since you say the adaptronic isnt registering i assume its not.

i remember my 4k starter motor was doing what you describe, and turned out the brushes in the starter motor were stuffed. couldnt transfer enough current.

it got worse and worse over a few weeks, then just refused to work. got it overhauled and it went incredibly fast after that!

oh yer if you put a multi meter across the battery when you crank it you can sort of get an indication of the condition of the batter. i woudlnt expect it to drop down past about 10V if the battery is in good condition.

tried a different battery?

[biggo]

Ill pull it out and have a geezer, may have to hock it to the auto elecy at work hmph.

[biggo]

So i pulled it out and check if it works, it does.

put it back in, hardwired the soleniod to the supply wire and gave it power. Same story cept it can do 3 90* turns now.

Might see if i can swap internals with a 3s starter.

[ke70dave]

yer just remember there is a massive difference between "Working" in a free spinning scenario (out of car) and "working" with the full load of the engine.

it will prolly spin by itself with like one strand of wire on the brushes. as its drawing hardly any current. but when you load it up it cant get the current required through.

one thing you can try, pull out your spark plugs, should make it stacks easier to turn for the poor starter. if it spins alot faster than yer id be sending it off to the auto elecy.

[biggo]

Yair i tried that, well i took the drive belts off and check timing belt tension. Made no difference.

Spark plags are another matter, stupid coilpacks and theres shit in the valley.

[Sam-Q]

what about disconnecting the ecu power (fuse?) and then trying to crank it, short the relay out if you have to. This will ensure the engine isnt trying to fire early and push the pistons back the wrong way on starting

[slide86]

yeah thats what i was thinking.

if its firing at the wrong point, it will actually work against the starter and push the engine in the wrong direction.

either disconnect the ecu, as sam has said, or unplug the coil(s) to prevent start and see what happens