Question about Cars & Trucks
1966 Pontiac 421ci engine, KRE heads, mild camshaft, Doug headers, electronic distributor module, 12 degrees initial advance, vacuum advance.
Check that you have the vacuum line connected to the right pipe at the base of the carby. The pipe should be at the point where the throttle butterfly touches when closed. Check that the ignition module is on the advance plate so that it can move when there is vacuum s it needs to be able to move with the vacuum action.
Posted on Nov 10, 2014
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Posted on Jan 02, 2017
SOURCE: engine sluggish
By all means tweak the distributor and adjust the idle to get your vacuum up to where it should be. At the same time have you checked the timing with a timing lite? If you have and it is bang on you may want to consider taking a look at your timing chain in the near future as it may be stretched a little. But before you do that, check your compression. hope that this helps and that you take the time to rate this information.
Posted on Oct 26, 2008
your in luck because all repair kits come with instructions
but dont get caried away taking out choke and throttle plates it isnt nessesary just take off the top and bottom and choke assemly clean up parts.blow out passages with air hose were safty glasses in case a check ball you missed or some dirt comes flying out
Posted on Mar 25, 2010
Here is a website that a free manual can be down loaded for your vehicle
Posted on May 01, 2010
The temperature sensor is where I would start. If the sensor tell the computer that the engine is cold it will initiate the warm up mode which includes advancing the timing along with a rich fuel mixture. Unfortunately, there are many sensors that assist in controlling timing and fuel mixtures that it is difficult for me to give you a guaranteed solution.
Posted on May 27, 2010
SOURCE: Emissions sticker under hood is
if this car has a 307 with a carb it did not come out with it the 1989 fleetwood came out with a 4.5L cadilliac V8 with DFI fuel system, so i have no idea whet to tell you on the vacuum lines.
the last year cadilliac used the 5.0L (307) was in 1986, and they used 2 fuel systems so you need to know your vin# the 8th vin# will be either a Y or a 9
now for adjusting the carb. if it has never been adjusted before you will need to remove the carb and turn it over and remove the factory plugs over the adjusment screws then reinstall the carb and using a double D adjustment tool turn the screws out 2 turns then start turning the screws in one at a time untill the rpm drops then back back out just untill the rpm leves back out then 1/4 more this is called a lean drop carb adjustment also this carb has a mixture control unit inside the carb and it can also be adjusted but you need a dwell meter adjust the mixture control unit to 30 degress dwell on the V8 scell.
Posted on Aug 07, 2011
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