 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Chevrolet / Chevrolet Corvette / February 200567 Running rough
I have a 67 390 big block that only gets driven once a month. When I go to start it cold it runs horrible. It is running way too rich and sometimes I have to take out the plugs and cleans them to get it running again. After about 15 minutes it will run normal. Here is the rub: I can run it on Saturday and put it away and it will start right up and run normal on Monday. What is the difference with the carb sitting 2 days as opposed to 28 days???? By the way I live in San Diego where cold is really not a factor and the Carb is 5 years old. Thanks for any input. Darin You have to ask? Gasoline is a chemical that begins changing immediately. It has a "shelf life" so to speak. So the older it gets, the less it is like it was. This means deposits form in the carb for one thing. Another is you have a Holley. Holleys leak. They have cork gaskets that leak. 40 year old Holleys are usually warped. You can do one of three things: replace with a new Holley, restore this Holley, or replace with another type of carb. Sitting for a month, they leak enough gas into the cylinders your plugs are gas fouled. And that is what you are getting. I recommend using the 44N instead of the 43N plug standard. If you never get it out on long runs, you might even try the 45N, although this could be too hot for any highway driving. And drive the darn thing. Once a month is nearly a museum piece. > I have a 67 390 big block that only gets driven once a month. When I > go to start it cold it runs horrible. It is running way too rich and [quoted text clipped - 5 lines] > Diego where cold is really not a factor and the Carb is 5 years old. > Thanks for any input. Darin So what you are saying is that fuel is leaking down the carb into the cylinder walls and thus running rich? I guess I buy that theory. I just figured it would not take 15 minutes to burn the gas out of the cylinders. By the way I have had this car for 15 years and it just starting doing this.. So I think I will opt to restore the carb since it is only 5 years old and hopefully nothing is warped. I promise I run twice a month if the carb overhaul works! >I have a 67 390 big block that only gets driven once a month. When I > go to start it cold it runs horrible. It is running way too rich and [quoted text clipped - 5 lines] > Diego where cold is really not a factor and the Carb is 5 years old. > Thanks for any input. Darin What kind of Ford is it?  SignatureDad 05 C6 Silver/Red 6spd Z51 72 Shark Black/Black/4spd That was a 67 427 390hp Corvette........ Ok does anybody know an average price for a 4 barrel Holley carb rebuild. I will be taking just the carb in and I dont want to get the shaft..... >average price for a 4 barrel Holley carb rebuild. Probably in the $200 - $300 range depending on the hourly rate for the shop, plus the rebuild kit cost. OR - if you're adventurous, buy the rebuild kit and take it on as a do-it-yourself project. If this is the first time you've done this, look for informational resources or check around with local Corvette club members or others who can provide assistance. Carb rebuilding for a street application isn't rocket science and is a pleasant day's diversion from workaday life. SignatureCharlie Funk Just Cruisin' Plus 800 888-0922 615 833-0922 www.justcruisinplus.com We prefer the MasterCard card > Ok does anybody know an average price for a 4 barrel Holley carb > rebuild. I will be taking just the carb in and I dont want to get the > shaft..... Thanks for the reply. There are some things I feel adventurous on, but having 100 little pieces laying around and putting it back together with extra pieces left over will just piss me off!!! :) > Thanks for the reply. There are some things I feel adventurous on, but > having 100 little pieces laying around and putting it back together > with extra pieces left over will just piss me off!!! :) I've done the Holley rebuild for my '67/ 390 a few times in the last 20 years. It's really not a big deal and there certainly aren't a 100 pieces (realizing a little exageration). I'd say there probably aren't more than a dozen or so. It's really just an exercise in cleaning and gasket replacement with a couple hardware parts thrown in. If you follow the instructions there's not that much to it. Here's waving to ya - \|||| Owen ___ '67BB & '72BB ___ "To know the world intimately is the beginning of caring." -- Ann Hayman Zwinger Take on the project. As you disassemble it, lay the parts out on butcher block paper. When you're done, replace the old parts with the new kit parts and reassemble in reverse. There are adjustments to make. My kit had the settings. > >average price for a 4 barrel Holley carb rebuild. > [quoted text clipped - 13 lines] >> rebuild. I will be taking just the carb in and I dont want to get the >> shaft..... Got the carb rebuilt for $400, ouch. Put it on today and fired right up and idled perfect. I guess you get what you pay for sometimes........ |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.