1985 K10 with fast idle and violent shut off
#1
1985 K10 with fast idle and violent shut off
Hey guys I have a 1985 K10 with a 350 crate engine, new distributer, and edelbrock intake and carb. It has a good idle in drive and reverse but when I shift to park our neutral, the idle gets really fast. Then when I shut it off the truck shakes and does weird stuff. Here's a link:
Do anyone know what's wrong/how to fix this?
Thanks
-Ryan
Do anyone know what's wrong/how to fix this?
Thanks
-Ryan
#6
CF Monarch
You'll need a timing light. Take it to a shop, this shouldn't take more than 10 minutes. Looking at that high rise with I dunno what cfm carb? If it's more than a 650 or so, on a 350 sbc, I'd suggest at least a 93 octane.
Last edited by kevinkpk; October 1st, 2012 at 3:33 PM.
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#8
CF Monarch
Thats an hei, clicking could be part of your problem. Can you do another you tube on it? Clicking in a point distributor could be spring or advance base plate, however that shouldn't case dieseling on shut off, that again is fuel, or timming. 600 cfm is fine for a street runner on a 350, however what cam is in it? If you have a long duration cam that could also point to higher octane to keep it from desieling, but with a standard build 87 (good gas) should be ok. My 455 likes higher octane but standard 455 it uses 87 also.
#9
Thats an hei, clicking could be part of your problem. Can you do another you tube on it? Clicking in a point distributor could be spring or advance base plate, however that shouldn't case dieseling on shut off, that again is fuel, or timming. 600 cfm is fine for a street runner on a 350, however what cam is in it? If you have a long duration cam that could also point to higher octane to keep it from desieling, but with a standard build 87 (good gas) should be ok. My 455 likes higher octane but standard 455 it uses 87 also.
#10
CF Monarch
Ok so i got a timing gun and the timing was too far advanced. I set the timing to 12 btdc, however this didn't fix the problem. My truck still idles unbearably fast and still "diesels" when i shut it off. However, when it is idling high, i can STOMP on the engine for a split second and when it goes back to idle, its a nice average idle. So could this have to do with the carburetor and the (wow the word for it is fleeting me) "gas wire" that connects the pedal to the carb?