Starter and possible dist. ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chucks70 · 04-01-2003, 11:20 PM

When I try to start my truck ('70 350 standard) sometimes tje starter does not engage the flywheel or it kicks out. It may take a few times but i t starts everytime I use it. I just know I'm heading down the road to being stuck somewhere. I thought it was a weak selenoid so I replaced that part. Still same problem. Teeth on flywheel are ok. There are no shims on the starter and haven't been for the 2 yrs I've had it. It started with no problem for the first 6 mos. or so. Any ideas?

The other problem is in timing. I have it set at 12 advance at idle. When I rev it up it approaches 0 and at about 2400RPM it starts back toward 12 advance. Could this be vacuum, weights or something else? Weights seem to move easy enough when pushed out with a screwdriver.

Class of 69 · 04-01-2003, 11:36 PM

Chuck, did you set the timing with the vacuum advance hooked up?? It seems that is the problem... when you give it gas the vacuum drops off. hence the lack of advance. Timing needs to be set with the hose off and plugged for correct setting. On to the starter... sounds like the bendix is sticking. If you remove the nose cone of the starter, there is a gear with a spring and pulley assembly that moves with the fork you will see in the pulley. It could be binding on the shaft.. or the spring could be weak, and or the bushing in the nose cone may be worn , letting the shaft shift to the side, binding the bendix. Does any of this make sense to you??? This is a lot harder to explain than I thought! I could have replaced the bendix, and bushing in this amount of time!!

chucks70 · 04-02-2003, 12:01 AM

On the timing I blocked the vacuum hose with a golf tee. I was thinking that by the time I had it up around 3000 rpm it should be way off the timing needle like about 28-30 advance.

On the starter believe it or not I understand what your saying. I didn't think of it earlier. I pull the starter and check out the gear movement on it.

krue · 04-02-2003, 12:02 AM

The starter sounds like the Bendix to me, too.

If you go get a new one, it will be pretty obvious where it goes.

You have to pull the solenoid and disassemble the starter motor to replace, but it sounds harder than it is.

04-01-2003, 11:20 PM	#1
chucks70 Registered User Join Date: Feb 2002 Location: Cadiz, OH Posts: 628	Starter and possible dist. ? When I try to start my truck ('70 350 standard) sometimes tje starter does not engage the flywheel or it kicks out. It may take a few times but i t starts everytime I use it. I just know I'm heading down the road to being stuck somewhere. I thought it was a weak selenoid so I replaced that part. Still same problem. Teeth on flywheel are ok. There are no shims on the starter and haven't been for the 2 yrs I've had it. It started with no problem for the first 6 mos. or so. Any ideas? The other problem is in timing. I have it set at 12 advance at idle. When I rev it up it approaches 0 and at about 2400RPM it starts back toward 12 advance. Could this be vacuum, weights or something else? Weights seem to move easy enough when pushed out with a screwdriver. __________________ 68 1 ton dually 292, 2001 Sebring, 2004 Trailblazer, 11 Camaro Convertible.

04-01-2003, 11:36 PM	#2
Class of 69 Registered User Join Date: Mar 2003 Location: Stillwater MN Posts: 1,166	Chuck, did you set the timing with the vacuum advance hooked up?? It seems that is the problem... when you give it gas the vacuum drops off. hence the lack of advance. Timing needs to be set with the hose off and plugged for correct setting. On to the starter... sounds like the bendix is sticking. If you remove the nose cone of the starter, there is a gear with a spring and pulley assembly that moves with the fork you will see in the pulley. It could be binding on the shaft.. or the spring could be weak, and or the bushing in the nose cone may be worn , letting the shaft shift to the side, binding the bendix. Does any of this make sense to you??? This is a lot harder to explain than I thought! I could have replaced the bendix, and bushing in this amount of time!! __________________ 69 GMC K10 ..some restoration required....still..

04-02-2003, 12:01 AM	#3
chucks70 Registered User Join Date: Feb 2002 Location: Cadiz, OH Posts: 628	On the timing I blocked the vacuum hose with a golf tee. I was thinking that by the time I had it up around 3000 rpm it should be way off the timing needle like about 28-30 advance. On the starter believe it or not I understand what your saying. I didn't think of it earlier. I pull the starter and check out the gear movement on it. __________________ 68 1 ton dually 292, 2001 Sebring, 2004 Trailblazer, 11 Camaro Convertible.

04-02-2003, 12:02 AM	#4
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	The starter sounds like the Bendix to me, too. If you go get a new one, it will be pretty obvious where it goes. You have to pull the solenoid and disassemble the starter motor to replace, but it sounds harder than it is. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"



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