New engine won't start!!!

fwfdlieutenant · 01-31-2010, 07:45 PM

What is the compresion supposed to be...what would be considered good compression?

essness · 01-31-2010, 07:48 PM

Now we gotta wait for the smart guys

They should be along shortly

Flintrock · 01-31-2010, 07:59 PM

Hook up the ground cable from the motor to the frame.

DOOmsman · 01-31-2010, 08:02 PM

Ess, he says he has fuel but is that in the carb not at the carb by pulling the fuel line. after trying that much it should have a wet plug. If not take a bottle cap and pour some gas in the plug hole and put the plug in and try

farleypug · 01-31-2010, 08:06 PM

I just did a compression check on mine and it's 165psi. Anywhere around that amount is pretty good. I have never had one of these motors apart but have had a lot of other's and am wondering if it's a keyed shaft where the flywheel bolts on? If so, iv'e seen people forget to put the keys back in and also shear them off. I'm sure someone will be along who will know for sure and you may have to disregard my last statement

. Is the motor making a popping noise when turning over? So the spark plug is getting wet when turning over? Did you try giving her a spray of the old go juice(starter fluid)?

essness · 01-31-2010, 08:07 PM

Oh good! the smart guys are here

fwfdlieutenant · 01-31-2010, 08:08 PM

the plug is wet...getting fuel to the plug. Amount of compression I should have? I pulled the plug and i have pressure and it also draws quite a vacuum on the down stroke.

DOOmsman · 01-31-2010, 08:10 PM

Do we have a valve timing issue here.

Rodger's Rides · 01-31-2010, 08:11 PM

Quote:

Originally Posted by fwfdlieutenant

What is the compresion supposed to be...what would be considered good compression?

I have seen SBC V-8s run on as little as 100 pounds of compression. Try what ESS said and hold your thumb over the spark plug hole and crank the engine over. If your thumb will not hold the pressure at the end of compression stroke, then you should have enough to start the engine. If you thumb DOES hold the pressure (without any blowing past the thumb) put about 1/2 tea spoon of motor oil in the cylinder and crank the engine over for about 30 seconds to spread the oil around on the rings. Then try the thumb trick again. If you get blow by on the thumb, put the plug back in and try to start the engine again. If this don't work, then we need to talk on the phone while you are working on it.

Make sure to dry the spark plug before reinserting it into its hole.

essness · 01-31-2010, 08:11 PM

Quote:

Originally Posted by Flintrock

Hook up the ground cable from the motor to the frame.

Did you see this one?

01-31-2010, 07:45 PM	#11
fwfdlieutenant Not Yet Wild Join Date: Jan 2010 Location: Fort Worth, texas Posts: 16	Re: New engine won't start!!! What is the compresion supposed to be...what would be considered good compression?

01-31-2010, 07:48 PM	#12
essness Not your usual outlaw Join Date: Oct 2008 Location: Near Lake Geneva, WI Posts: 20,054	Re: New engine won't start!!! Now we gotta wait for the smart guys They should be along shortly

01-31-2010, 07:59 PM	#13
Flintrock Raised by coyotes Join Date: Nov 2008 Location: Central Texas Posts: 5,658	Re: New engine won't start!!! Hook up the ground cable from the motor to the frame.

01-31-2010, 08:02 PM	#14
DOOmsman Gone Wild Join Date: Jul 2008 Location: Reddick IL Posts: 11,220	Re: New engine won't start!!! Ess, he says he has fuel but is that in the carb not at the carb by pulling the fuel line. after trying that much it should have a wet plug. If not take a bottle cap and pour some gas in the plug hole and put the plug in and try

01-31-2010, 08:06 PM	#15
farleypug Getting Wild Join Date: Jun 2008 Posts: 126	Re: New engine won't start!!! I just did a compression check on mine and it's 165psi. Anywhere around that amount is pretty good. I have never had one of these motors apart but have had a lot of other's and am wondering if it's a keyed shaft where the flywheel bolts on? If so, iv'e seen people forget to put the keys back in and also shear them off. I'm sure someone will be along who will know for sure and you may have to disregard my last statement. Is the motor making a popping noise when turning over? So the spark plug is getting wet when turning over? Did you try giving her a spray of the old go juice(starter fluid)?
farleypug Getting Wild Join Date: Jun 2008 Posts: 126

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01-31-2010, 08:07 PM	#16
essness Not your usual outlaw Join Date: Oct 2008 Location: Near Lake Geneva, WI Posts: 20,054	Re: New engine won't start!!! Oh good! the smart guys are here

01-31-2010, 08:08 PM	#17
fwfdlieutenant Not Yet Wild Join Date: Jan 2010 Location: Fort Worth, texas Posts: 16	Re: New engine won't start!!! the plug is wet...getting fuel to the plug. Amount of compression I should have? I pulled the plug and i have pressure and it also draws quite a vacuum on the down stroke.

01-31-2010, 08:10 PM	#18
DOOmsman Gone Wild Join Date: Jul 2008 Location: Reddick IL Posts: 11,220	Re: New engine won't start!!! Do we have a valve timing issue here.

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