BillyTheGoat

iTrader: (2)

The carb I got is a holley 4160 (305 engine), The car starts right up but, the idle is way too high around 1500-2000. I messed with the idle screw which did nothing. I'm thinking its the timing, it had a qjet before this one and it ran ok the idle was around 600. Also the qjet was computer controlled, I Didn't put it there, someone made a carb swap and put it there. Also its vacuum advance distributor

I've read around on how to set the timing and it seems kinda hard. I'll have to go out and buy a timing light. Is my high idle problem timing related or the new carb cus it idled fine before

DoubleV

Well if you put a completely different carb on your engine, it could just be your new carb is crap, improperly adjusted, or just a bad match for your combo ( I don't know anything about the 4160 ). I'd say most likely it's a vacuum leak or your throttle is stuck open a bit for one reason or another. Does it always idle high even when warmed up?

Your problem is probably not timing related, but you should have your engine timed properly regardless. If you think timing a car is hard, you may want to consider trading in your tools for a payment on a brand new car with a warrenty. Seriously, if you think it's difficult, I think you may be just misunderstanding how it's done because it's Forrest Gump-like easy.

vangogh4560

that carb has a fast idle screw under the electric choke open the throttle all the way and you can see it..it comes strait from Holley set up for like 1500 to 1800 for some reason!! i have the same carb and it did the same thing to me this will help
http://buylsparts.com/data/Products/...l/199R9881.pdf

vangogh4560

are you always a ***?

BillyTheGoat

iTrader: (2)

thanks!!! I didn't even see it .
I'll adjust it in the morning and see how she runs

BillyTheGoat

iTrader: (2)

I adjusted the fast idle screw and it really didn't do much. But I think I found out why the idle is high.

When I installed the carb, I also put a spectre bracket for the throttle return spring. I used one of the bolts on the intake manifold, either I tightened too hard cracking the intake , or not tight enough leaving a gap.

OR a cracked head or block, I started the car up the other day and white smoke started coming out the exhaust, I could feel the steam so its gotta be coolant. I can't really see bubbles in the over fill bottle but, the radiator gets foamy, like soda.

Too much air seems to be getting in and also coolant is getting in the combustion chamber. There isn't any coolant in the oil though. I'm hoping its intake manifold related, I haven't driven the car long enough to make it run hot enough to crack a head and it never ran hot when I did drive it. I've only driven it maybe 10 miles this year and it always stayed cool.