Author Topic: Locked up mtdi motor?  (Read 5498 times)

June 26, 2014, 04:27:05 pm

Diesel_Zuk

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Locked up mtdi motor?
« on: June 26, 2014, 04:27:05 pm »
My samurai motor is a 98 ahu tdi, with a mechanical pump. A while back, I did something stupid, I ground down the back snout of the crank shaft to put the flywheel on for the suzuki transmission. Problem is, I took too much off, and long story short, had to replace the crankshaft. I did all brand new bearings, bolts, seals, and everything in between. Then, the engine sat, unstarted, for a few months. Fast forward to now, I'm about to drop the motor in, but first, I wanted to bench start it. I filled it with oil, put on the starter, primed it, ran fuel line to a tank of diesel, and hooked up a set of jumper cables to try to start it. Nothing happened except starter clicked. Confusing, I got the starter from a junk yard, so I thought maybe that was the problem. Tried to turn it over by hand, and it feels locked up. I turned the engine over by hand with a ratchet about a month ago in my garage, and it had strong compression, was hard to turn, but now, I can't even turn it by hand with a breaker bar on the crank. Motor ran perfect when pulled from the donor car, everything was torqued properly, but I'm at a loss as to where to even begin. I did use oil assembly grease when I put it back together. Ideas on where to start?

Reply #1June 26, 2014, 05:13:27 pm

theman53

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Re: Locked up mtdi motor?
« Reply #1 on: June 26, 2014, 05:13:27 pm »
verify timing

Reply #2June 26, 2014, 05:16:45 pm

vanbcguy

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Re:
« Reply #2 on: June 26, 2014, 05:16:45 pm »
Is your garage heated? Dry?

Rings may have rusted to the cylinders assuming everything was timed properly previously.
Bryn

1994 Jetta - AHU M-TDI - Jezebel Jetta
2004 Jetta Wagon - 1.8T - Blitzen

Reply #3June 26, 2014, 06:22:02 pm

Diesel_Zuk

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Re: Locked up mtdi motor?
« Reply #3 on: June 26, 2014, 06:22:02 pm »
Engine was in time. As stated, it was turning over okay in the garage a couple months ago when I put the flywheel on. My new problem I have now, is that with the suzuki transmission, I have no timing hole for the flywheel, so I don't know how to verify tdc on the crank.

Reply #4June 26, 2014, 06:31:06 pm

theman53

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Re: Locked up mtdi motor?
« Reply #4 on: June 26, 2014, 06:31:06 pm »
What starter and bell housing are you using? Please make a TDC mark now or you will really not like it later. If you are not using the vw stuff and you just put the starter on, then I would look there after timing was verified.

Reply #5June 26, 2014, 06:54:57 pm

Diesel_Zuk

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Re: Locked up mtdi motor?
« Reply #5 on: June 26, 2014, 06:54:57 pm »
Suzuki sidekick/geo tracker housing and transmission, sidekick/tracker flywheel modified to fit, sidekick/tracker starter. I pulled starter off, and apparently it was just jamming up the flywheel, it turns over just fine by hand with starter removed. I'm going to measure tomorrow the distance between bellhousing and flywheel on a stock sidekick/tracker, and then shim this thing up. I think I need it lol.

Reply #6June 26, 2014, 07:50:39 pm

Diesel_Zuk

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Re: Locked up mtdi motor?
« Reply #6 on: June 26, 2014, 07:50:39 pm »
Wow I'm stupid. Realized my biggest mistake. I only had power to the solenoid, not the windings. I'm such an idiot.

Reply #7June 26, 2014, 08:59:53 pm

vanbcguy

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« Reply #7 on: June 26, 2014, 08:59:53 pm »
That'll do it!
Bryn

1994 Jetta - AHU M-TDI - Jezebel Jetta
2004 Jetta Wagon - 1.8T - Blitzen

Reply #8June 26, 2014, 10:09:19 pm

Diesel_Zuk

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Re: Locked up mtdi motor?
« Reply #8 on: June 26, 2014, 10:09:19 pm »
Upon second attempt, the solenoid is bad. So I gotta order a solenoid now......Anyhow, I need the space the starter out more than it is now anyways.

Reply #9June 29, 2014, 02:42:52 pm

fatmobile

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Re: Locked up mtdi motor?
« Reply #9 on: June 29, 2014, 02:42:52 pm »
Feel which bolt on the solenoid gets hot when cranked for awhile.
If it's the positive to the starter:
 Unscrew the washer at the base, push the stud in and turn it so it make different contact.
 
Tornado red, '91 Golf 4 door, with M-TDI 12mm pump, south bend clutch, VNT-15 turbo, 02A trany
MK4s: 2000 TDI jetta, 2003 TDI wagon, 2000 golf 2.0 gasser.
'84 Rabbit with 1.7TD KY block pistons bored to 80mm, VNT-15
'84 GTI with stock 1.6TD starion intercooler.