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Old 10-05-2013, 05:42 PM
erauqssidlroweht
 
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New engine turns over slowly

New engine, vortec heads 350 trying to start It for the first time for break in and it won't start. Turns over very slow. I used shim gaskets to get a little more umph for the buck, so I estimate between 10.5 and 11 to 1 area, so shouldn't be a problem for a stock starter, I used a new 800 cca napa battery and even tried cranking with my f350 powerstroke hooked up. Just turns over slowly and doesn't sound right. I stabbed the dist prior to install and I'm pretty sure it's onthe money, I had a buddy turn the diet to try and get it to fire, bu no mater what I try it won't fire on its own. Spits regardless of timing. I'm running 91 octane with an additive, so I do not think its the fuel. What's wrong?

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Old 10-05-2013, 05:45 PM
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An ignition cut off for starting might help.
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Old 10-05-2013, 05:48 PM
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I have a remote starter switch. Just advanced it pretty far and it backfired. Open headers. I turned it clockwise a hair or so and more spittin but no starting.
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Old 10-05-2013, 05:52 PM
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It sounds like you need to re-check your timing and make sure your distributor is wired in the correct firing order.
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Old 10-05-2013, 06:21 PM
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Well, I can't have set the cam wrong, ha ha. I had an assistant tell me when the 1 cyl was pushing out, so if he lied to me I will have to flog him. I inspected and physically saw the piston at Tdc so the marks on the balancer correspond correctly. I set the gap at .30 due to the high compression. I'm getting some backfires now, I'm willing to bet its 180 out.
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Old 10-05-2013, 06:22 PM
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You're timed 180 degrees off.
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Old 10-05-2013, 06:23 PM
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Plugs are set right, nose on the fist is pointing between 3 and 5, closer to 3
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Old 10-05-2013, 06:55 PM
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Yup, 180 out, still doesn't explain the lethargic cranking, unless it's just too much for the starter. Got it real close now
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Old 10-05-2013, 08:10 PM
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Ok, she lives, but I shut her off it's too late to do a burn in at this time Of night with open headers. The issue now is the starter, I think I need a stronger starter, and I get a bonk, or donk, pretty. Insistently from what sounds like on the passenger side but I didn't run her long to pinpoint. Like someone whacking the oil pan with a wrench kind of sound, or a kid hitting on a pan.
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Old 10-05-2013, 08:18 PM
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maybe a mean friend was tapping a wrench.
oldest joke in the book when a new engine fires in front of a crowd
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Old 10-05-2013, 08:59 PM
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Nope, that mean friend was behind the wheel with the doors closed and fingers in his ears attempting to avoid a backfire. "he's a vet who had one too many close calls with explosives". Almost sounds like a dead cyl, I pulled the. Over on that side and the rockers on 4,6 were uncomfortably loose to me, looks like I'll have to tighten them by hand again to try to reign in the lash before burnin in the new cam.
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Old 10-06-2013, 11:22 AM
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Quote:
Originally Posted by NintendoKD View Post
still doesn't explain the lethargic cranking
Either the hot cable or the ground cable is bad, maybe corroded down inside the insulation of the cable. That's my best guess because it happened to me.
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Old 10-06-2013, 03:58 PM
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Bad - or + connections. Your earth is JUST as important as the hot cable. Be sure grounding is clean and substantial. Where is the battery?



Duke
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Old 10-06-2013, 05:17 PM
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Battery is up front as per the usual 75' pickup arrangement. The neg are both new. One is connected from the book to the frame, the other is connected from the be terminal to the same bolt on the block. The pos cable is ..... Well old, probably original. I swapped to a 98' vortec starter, same issue. I'll try the cable next.
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Old 10-06-2013, 05:53 PM
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Quote:
Originally Posted by NintendoKD View Post
Battery is up front as per the usual 75' pickup arrangement. The neg are both new. One is connected from the book to the frame, the other is connected from the be terminal to the same bolt on the block. The pos cable is ..... Well old, probably original. I swapped to a 98' vortec starter, same issue. I'll try the cable next.
Make sure the earth strap is nice and fat - full size. Not one of those pissy 1/4" things.

I had problems like yours once too. My battery is in the trunk. I have a big fat hot wire (fat as your finger) running underneath the sill from the +batt to the starter. I had one thin 1/4" earth from the batt neg to the chassis in the trunk and one strap from the block to the chassis in the engine bay... 'twas facking hopeless.

Then is put a ground from the firewall to the front end , to effectively connect the body of the car to the front end, and beefed up the earth strap in the truck.
Made ALL the difference.

Be sure to install the starter brace too.



Duke

Last edited by thinwhiteduke; 10-06-2013 at 05:58 PM.
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