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Author
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Topic: new setup having problems
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sleeping stallion
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Member # 8162
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posted
 
 
hey cafords
its a 302 bored .40 over 308
165 afr h with 1.7 roller rockers stock valve covers
holley intake 70 mm egr and tb
f cam v1 vortech for about 6 lbs of boost
summit racing 50 oz balancer stock dizy
my problem is the first day i set time turned on right away idles great let it idle for good 10 min then cut it off.
thengo to turn it back on and it just turns it wont turn on.
let it sit for a day came back and fired right up then did the same
i took the dizzy out and restabed it thinking it was timing fired right up and the same thing im getting 38 40 of fuel so fuel pressure im good
any ideas ive read it can be a few things bent valves distrubter vac leaks which i checked for thanks in advance cafords
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1990 coupe HCI Boost
SEMPER FIDELIS
Posts: 1650 | From: Modesto ca | Registered: Jan 2008
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sleeping stallion
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Member # 8162
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posted
anyone
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1990 coupe HCI Boost
SEMPER FIDELIS
Posts: 1650 | From: Modesto ca | Registered: Jan 2008
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5.0 LsX
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Member # 10017
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posted
dizzy module?
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91' Notch
Posts: 1260 | Registered: May 2010
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turbo50
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Member # 6700
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posted
If it fires right up and idled good it isn't bent valves.
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.........when was the last time YOU built something with YOUR own hands?
I offer quality sidework at reasonable prices. PM ME
Posts: 7606 | From: Discovery Bay, California | Registered: Apr 2006
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JohnB
Tech Moderator
Member # 969
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posted
Have you checked spark after a restart attempt?
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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LXjames
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Member # 10791
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posted
Warm tfi module I'm betting. The get warmed up and basically over heat then you turn the car off and doesn't want to start then it sits an cools and works great again. Wierd thing is it won't die while running it just won't start once you turn it off. Had this problem before
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On Point Motorsport prez.
King Lx
Posts: 4761 | From: Pittsburg CA | Registered: Mar 2011
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sleeping stallion
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Member # 8162
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posted
thanks guys thats where i was stuck it idles great set timing at 10 and sits there idling at about 750 800 rpm thats all i have touched i will be changing out the dizy any sugestions
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1990 coupe HCI Boost
SEMPER FIDELIS
Posts: 1650 | From: Modesto ca | Registered: Jan 2008
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speeddhb
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Member # 6593
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posted
Ive had a "no start" several times after you put in a new combo, or cam or something else that alters airflow significantly. I think the stock computer goes through a "learning" process. All of my "no starts" would fire right up after I let it sit for bout 30 mnutes
then after once or twice of doing that it would never do it again. I believe its "learning"
[ 2013-05-01, 01:08 PM: Message edited by: speeddhb ]
Posts: 250 | From: Rocklin | Registered: Mar 2006
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sleeping stallion
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Member # 8162
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posted
so how do you fix the learning or what does it take to fix it
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1990 coupe HCI Boost
SEMPER FIDELIS
Posts: 1650 | From: Modesto ca | Registered: Jan 2008
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warhorse58gt
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Member # 7702
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I start with module or coil. Seem like some thing is getting hot and not working. Then once it has cooled down it works again. I could of just told you that on the phone. If you every called. ![[Razz]](tongue.gif)
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WOLFPACK RACING
With guns, we are 'citizens'. Without them, we are 'subjects'.
83gt 354ci sbf 9.40 @ 143
77 cobra 2 171ci 97hp of pure fury!
Posts: 4200 | From: 209 | Registered: Jun 2007
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sleeping stallion
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Member # 8162
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posted
man with work and all i dont get home till bout 7730 and havent had time to even touch the car im gonna check some stuff out today and get back with updates
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1990 coupe HCI Boost
SEMPER FIDELIS
Posts: 1650 | From: Modesto ca | Registered: Jan 2008
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MACK.GT
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Member # 10461
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posted
it could be a bad ignition coil, you can check it w a dvom or just replace it right quick with a known good one. or you can do a spark test , see if you have a strong or weak spark .
Posts: 446 | From: 510 | Registered: Nov 2010
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sleeping stallion
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Member # 8162
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posted
Update I change the dizzy to a known good one same thing fired up then turned it off to see if it would start again nothing. I took number 5 cyclinder wire off to see for spark nothing my guess is going to be the ignition coil it worked fine before the swap though
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1990 coupe HCI Boost
SEMPER FIDELIS
Posts: 1650 | From: Modesto ca | Registered: Jan 2008
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turbo50
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Member # 6700
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posted
Check all of your grounds!
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.........when was the last time YOU built something with YOUR own hands?
I offer quality sidework at reasonable prices. PM ME
Posts: 7606 | From: Discovery Bay, California | Registered: Apr 2006
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