Just bought a 76 225 that has work done Bored .030 and a comp cam Holley 390 carb and headers. But it's not starting turns over super slow. Need help asap
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| Author: | camiking23 [ Tue Feb 24, 2015 11:49 am ] |
| Post subject: | new engine not starting |
Just bought a 76 225 that has work done Bored .030 and a comp cam Holley 390 carb and headers. But it's not starting turns over super slow. Need help asap [/img]
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| Author: | '67 Dart 270 [ Tue Feb 24, 2015 12:03 pm ] |
| Post subject: | rope seal? |
Did they use a rope seal and not install properly? You should be able to turn the crank, without spark plugs, with 10-20 lb ft of torque. The crank seal drag should not be higher than 20 lb ft (or lower than 10). Some people install them without checking and it makes the engine hard (or impossible) to turn over. brian |
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| Author: | '67 Dart 270 [ Tue Feb 24, 2015 12:04 pm ] |
| Post subject: | battery |
I assume you have a good battery and starter... |
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| Author: | camiking23 [ Tue Feb 24, 2015 3:34 pm ] |
| Post subject: | |
No rope seal nothing I don't think installed by backyard mechanic. And while putting the torque converter bolts on it was a lil though in a spot but still moved and I'm using the heavy duty starter because of it being a D150 and the heavy 727 |
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| Author: | Reed [ Tue Feb 24, 2015 3:51 pm ] |
| Post subject: | |
Timing too far advanced? Loose battery cable connection at battery, block, or starter motor? Battery needs a recharge/replacement? How fast does the motor turn over with the spark plugs removed? |
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| Author: | camiking23 [ Tue Feb 24, 2015 4:00 pm ] |
| Post subject: | |
Doing it with the plugs out won't mess up the compression and don't know bought the engine from Sumbdy who said everything was in perfect sync from the fuel to idle |
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| Author: | Reed [ Tue Feb 24, 2015 4:17 pm ] |
| Post subject: | |
Removing the spark plugs while you crank the engine will make it so the engine has NO compression. Cranking the engine over with no compression and no spark will let you determine if there is a problem with something binding insie the engine. Removing the spark plugs will eliminate improper timing too high of compression as possible causes for a slow cranking engine. If the engine spins fine with the plugs out then you know there is nothing binding in the motor and can focus on other things. If the motor still spins slow with th eplugs out then you know you have a problem with the starter motor circuit and/or something binding internally in the engine. |
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| Author: | camiking23 [ Tue Feb 24, 2015 4:24 pm ] |
| Post subject: | |
Will try in the am with some light. But theoreticly what could it be if not something internal |
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| Author: | Reed [ Tue Feb 24, 2015 5:42 pm ] |
| Post subject: | |
Quote: But theoreticly what could it be if not something internal
Quote: Timing too far advanced? Loose battery cable connection at battery, block, or starter motor? Battery needs a recharge/replacement?
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| Author: | camiking23 [ Tue Feb 24, 2015 6:27 pm ] |
| Post subject: | |
Forgot to mention When I go to crank it it turns over slow runs for a micro second and stops. Sometimes I hear the starter clicking and now and then just the relay clicking when I try to crank it |
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| Author: | '67 Dart 270 [ Tue Feb 24, 2015 7:02 pm ] |
| Post subject: | battery? |
Sounds like your battery is low or there's a short in the system, power not getting to your starter... |
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| Author: | DusterIdiot [ Tue Feb 24, 2015 7:03 pm ] |
| Post subject: | I would... |
Quote: Cranking the engine over with no compression and no spark will let you determine if there is a problem with something binding inside the engine.
I would pull the plugs and roll it over by hand (breaker bar and socket if it has the crank bolt installed...little by little if by hand on the belt. The reason being: If the engine is tight or is only tight in one "spot", you will be able to check it this way.... if something is really wrong (rod bearing caps on wrong, clearances not checked and the bearings are literally 0 clearance on the crank journals, seized rod....)...if something is really wrong and you get the engine to light, you can be out the engine in a matter of seconds....If the engine is "tight" with the plugs out and oil in the bores, it should not take too much effort to roll the crank over by hand with a socket and bar.... Time to put a charger on your battery overnight. |
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| Author: | DadTruck [ Tue Feb 24, 2015 7:06 pm ] |
| Post subject: | |
also be sure there is a good ground from the block back to the battery negative terminal. |
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| Author: | camiking23 [ Wed Feb 25, 2015 8:43 am ] |
| Post subject: | |
I'm going to tighten the comnecions more but turned over much faster with no pulgs in |
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| Author: | Reed [ Wed Feb 25, 2015 9:40 am ] |
| Post subject: | |
Starter clicking and relay clicking = dead battery. Charge your battery and try again. |
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