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cameron henderson (aka vegalover2005) [ View ] [ Email ] [ Car Ads ] [ Blogs ] lodi, California

I have a 1974 vega gt with a small block 305. I got the motor from a junkjard i used to work for. It has a mild cam, rollar rockers, MSD, new 650 edl., i rolled new rod and crank beraings did the whole tune uo. The car will not idle at all when the idle is at 1,000 or so it tends to load up and back fire. ive re-timed it a number of times and hasnt fixed the problem, i even check to see if it jumped a tooth but its dead on.The car seems to run better with the vacume adv. pluged off on both the carb and dist. but still wont idle,and im getting valve tap. i need help, i wanna race on new years.

Comments

Posted by Italianguy63  -  12/22/2007 06:23 PM 650 is the problem.. it is drowning. Speed is about how fast do you want to spend! [ View ] [ Email ] [ Blogs ] [ Car Ads ] Bartow, Florida   Posted by vegalover2005  -  12/22/2007 06:32 PM even with a big cam??i have the idle screw on the side all the way up and it wont idle vegalover2005 [ View ] [ Email ] [ Blogs ] [ Car Ads ] lodi, California   Posted by dixie  -  12/22/2007 07:58 PM Sounds kinda like a vacum leak,have u ckecked intake & carb does it have hyd lifters are solid? jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006   Posted by vegalover2005  -  12/22/2007 08:35 PM no vacume leaks and to tell you the truth i couldnt tell you. i loosened the rockers a bit and i could get it to idle at about 1,600 rpm but still the idle on the side was almost all the way tight. im going to put a holley 450 on it tomorrow. vegalover2005 [ View ] [ Email ] [ Blogs ] [ Car Ads ] lodi, California   Posted by Italianguy63  -  12/23/2007 10:55 AM Lower the CFM-- you will also probably find your timing is too advanced too. Check for leaks around the carb base and the manifold too-- you can do it by spraying Windex around the area and see if the engine speed changes... MC Speed is about how fast do you want to spend! [ View ] [ Email ] [ Blogs ] [ Car Ads ] Bartow, Florida   Posted by robymarks  -  12/23/2007 03:10 PM Have you checked the vacuum advance to see if it is even working? Is it sucking air at the advance? What did you time it at? I agree it sounds like a vacuum leak. robymarks [ View ] [ Email ] [ Blogs ] [ Car Ads ] Houston, Texas Charter Member since October 2005   Posted by vegalover2005  -  12/24/2007 08:41 PM thanks so far for the help, putting a 450 on it let it idle at a low rpm without loading up. But my 450 is no good so wed im getting a brand new one vegalover2005 [ View ] [ Email ] [ Blogs ] [ Car Ads ] lodi, California   Posted by hotrodgene  -  12/24/2007 09:52 PM I had a problem that sounded just the same and found the back two barrels not closing fully.Go into back two barrels with a screw driver and push down on rear blades. Thanks,Gene [ View ] [ Email ] [ Blogs ] [ Car Ads ] Saint Petersburg, Florida   Posted by protruck69orange  -  12/26/2007 11:27 AM If you find out your back buttereflys are not closeing, remove the carb. look on the bottom side of base plate driver side of carb. You will find a adustment screw for idle on back butterflys, back off on this screw it should help. protruck69orange [ View ] [ Email ] [ Blogs ] [ Car Ads ] kountze, Texas   Posted by vegalover2005  -  12/26/2007 05:49 PM i bought a new 500 cfm and finally it will idle at 1,200 rpm. i think i need to replace the valve springs because they are stickin and they tap the piston. Getting close to suckin a valve vegalover2005 [ View ] [ Email ] [ Blogs ] [ Car Ads ] lodi, California   Posted by 50pickup  -  12/27/2007 01:54 PM Geez, 1200 is choke-on FAST idle speed! Should idle at around 650 normally, even with a mild cam. At 1200 my 305 sqawks the tires when I put in gear! Mine's stock inside, but runs fine with either the 600 or 500CFM Edl. & a 1" thk. 4-hole spacer. Sounds like vaccum problem alright. Are you running an open plenum spacer? 50pickup [ View ] [ Email ] [ Blogs ] [ Car Ads ] POTTERVILLE, Michigan   Posted by 50pickup  -  12/27/2007 02:18 PM Come on Shine, spit it out! 50pickup [ View ] [ Email ] [ Blogs ] [ Car Ads ] POTTERVILLE, Michigan   Posted by 56chevytruck  -  12/27/2007 05:06 PM Say it porchdog say it!!!.... Say What... [ View ] [ Email ] [ Blogs ] [ Car Ads ] Midlothian, Texas   Posted by fitzwell   -  12/27/2007 05:08 PM ..O.... normal?? Normal is a cycle on a washing machine [ View ] [ Email ] [ Blogs ] [ Car Ads ] benbrook, Texas   Posted by Italianguy63  -  12/27/2007 06:23 PM I think it is an "A" not a "O" fitzwell! Can I buy a vowel for $2? Speed is about how fast do you want to spend! [ View ] [ Email ] [ Blogs ] [ Car Ads ] Bartow, Florida   Posted by dixie  -  12/27/2007 09:36 PM I ant the carb { vowel's cost $3} jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006   Posted by 56chevytruck  -  12/28/2007 09:12 AM i dont wanna spend my xmas money... Say What... [ View ] [ Email ] [ Blogs ] [ Car Ads ] Midlothian, Texas   Posted by koolstuff0099  -  12/29/2007 07:01 AM Mild cam?......I just read an article about how the roller rockers (1.52ratio) where actually hitting the spring retainers on the inside. The people writing the piece were told by the manufacturers to "grind" a little material off the rockers? They did. everything was KOOL. And that was with a stock GM cam. Did you just install the rockers?....But generally speaking, a vacumn leak will cause an engine NOT to idle. Get a spray can of starting fluid can check along intake,,,,that would be a start. Seems like 1200 RPMs is way way too much?.......Let me guess.. T?....R?....O?.......UBLE? is that it Shine? B-Dog [ View ] [ Email ] [ Blogs ] [ Car Ads ] Newburyport, Massachusetts   Posted by dixie  -  12/29/2007 12:30 PM I wouldn't use starting fluid could go Boom wd 40. Come on shine whats wrong with it? You never answered Shine ? about the 350 timeing mark what about it. jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006   Posted by vegalover2005  -  12/30/2007 05:43 PM i mave a 2300 stall in it. i im going to take the motor out over the winter and im going to salvage some of the parts and build my self a sbc 400, or should i put a 350 together for my vega?? vegalover2005 [ View ] [ Email ] [ Blogs ] [ Car Ads ] lodi, California   Posted by 37tin  -  12/30/2007 11:41 PM well... something just ain't right here!!! I think I got it. but , not sure. 37tin [ View ] [ Email ] [ Blogs ] [ Car Ads ] langley, Canada   Posted by brian41chevy  -  12/31/2007 02:10 PM Prank blogger, you ain't livin the high life. There is a fine line between hobby and mental illness [ View ] [ Email ] [ Blogs ] [ Car Ads ] New Lenox, Illinois Charter Member since November 2004   Posted by 37tin  -  12/31/2007 04:40 PM Thanks Shine, respect for you guys held me back from making a call on this one, I havn't been here long enough... 37tin [ View ] [ Email ] [ Blogs ] [ Car Ads ] langley, Canada   Posted by dixie  -  12/31/2007 07:34 PM Man i'm afraid top say anything anymore. jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006   Posted by 37tin  -  01/02/2008 01:23 AM OK, I did some testing on a old motor to create the high idle problem, fooled with vacumn etc. easier to solve than cause, then it hits me after the reread, junkyard motor! went and got rerefined oil, thats what they use I'm sure now!, pouring this stuff in I see all these little micro balloons, like tiny bubbles and they don't go away, the linear motion accelerator[lifter/ rod]{ this won't happen with solids.} has a build up of balloons and they pop!! kinetic energy transferred through the fulcrum pushes the linear motion decelerator into an area its never been before , so tulips stick 3 or 4 thou. and a high idle occurs. added amSTPol getting quieter by the minute, solved!make sense now? had fun with this, wishing you all the best !! there ya go vega guy. 37tin [ View ] [ Email ] [ Blogs ] [ Car Ads ] langley, Canada   Posted by whipsold39  -  01/02/2008 09:48 AM If you remove the muffler bearings the idle will drop 4 degrees below zero whipsold39 [ View ] [ Email ] [ Blogs ] [ Car Ads ] 400 9th ave silvis 61282, Illinois Charter Member since January 2006   Posted by fitzwell   -  01/02/2008 10:16 AM 'tis a simple problem y'all have overlooked..... the vehicle obviously does not have the 1.21 gigawatts at the ignition switch, required to properly engage the flux capicator. This, coupled with the additional load of the solar powered dog polisher will lead to a high idle issue, as well as an ineffictive connection between the steering wheele & the drivers seat. normal?? Normal is a cycle on a washing machine [ View ] [ Email ] [ Blogs ] [ Car Ads ] benbrook, Texas   Posted by dixie  -  01/02/2008 11:42 AM Yea all of that is true but don't forget ya'll forgot the most an all imporant thing. jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006   Posted by 37tin  -  01/02/2008 05:34 PM yes, I forgot, does it have to do with gravitional pull and the temp in florida. he he 37tin [ View ] [ Email ] [ Blogs ] [ Car Ads ] langley, Canada   Posted by dixie  -  01/03/2008 10:23 AM Dog gone 37 your getting close jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006   Posted by meangene  -  01/03/2008 12:11 PM ????????????????????WHAT?????????????? gene foster [ View ] [ Email ] [ Blogs ] [ Car Ads ] Labadie, Missouri   Posted by 37tin  -  01/03/2008 09:09 PM getting warmer am I?? c'mon spill the beans...the top knotch diagnostic team needs to know.....by the way, I've had a great time on this site, thanks you guys... 37tin [ View ] [ Email ] [ Blogs ] [ Car Ads ] langley, Canada   Posted by dixie  -  01/04/2008 08:42 PM Got you thinking ,thats good. jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006   Posted by 37tin  -  01/04/2008 09:23 PM So.....thats whats happening to me, the last time I had to go to a warmer climate to recoup 37tin [ View ] [ Email ] [ Blogs ] [ Car Ads ] langley, Canada   Posted by Italianguy63  -  01/05/2008 11:47 AM I had a stuck procrastinator valve once. MC Speed is about how fast do you want to spend! [ View ] [ Email ] [ Blogs ] [ Car Ads ] Bartow, Florida   Posted by vegalover2005  -  01/24/2008 05:21 PM Well this weekend im taking that pos 305 out and in a week or two ill have my 350 that is almost done being built vegalover2005 [ View ] [ Email ] [ Blogs ] [ Car Ads ] lodi, California   Posted by robymarks  -  01/24/2008 06:05 PM What the...? Again? robymarks [ View ] [ Email ] [ Blogs ] [ Car Ads ] Houston, Texas Charter Member since October 2005   Posted by dixie  -  01/24/2008 06:48 PM I tryed to tell ya'll this could happen ,its real bad when you want to race an it gets worse. down in florida where all the race cars in the US are at right now ,you name it its down here for the next 30 days. jim grace [ View ] [ Email ] [ Blogs ] [ Car Ads ] dade city, Florida Charter Member since January 2006

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