Wednesday, January 25, 2012

How can I properly time a VW 1600cc air-cooled engine w/ a Weber Progressive Carb and get it to start up?

I have installed a brand new 1600cc VW engine in a 1968 Bug. I'm using a Weber Progressive Carb. Fuel is flowing into the engine. I got new spark plugs. I just can't get the timing right to fire-up the engine. Can any one give me some insight to this problem? When I turn the key the Engine cranks but it will not turn over.How can I properly time a VW 1600cc air-cooled engine w/ a Weber Progressive Carb and get it to start up?did you put in the distributor or was it already installed? on the 1600 the distributor can be installed 180 degrees off. you might try removing the dist. turnint it 180 and try to start again, or haul it over to where you bought the engine and have them start it up for you.



once it starts the timing is 10 degrees btdHow can I properly time a VW 1600cc air-cooled engine w/ a Weber Progressive Carb and get it to start up?
Hope your dist drive has been installed properly! Assuming it has bring #1 to top dead center. Pull plug and feel for compression. Stop when time marks are lined up with split in case. Time marks; 3 marks, start with mark by it self. 1 mark,this is 5 atdc. so put it to the left of case split . Remove cap, check to see if rotor is pointing at #1 .

It should line up with time mark on top of dist unit where cap sets. Get all this right ,tdc#1,rotor lines up with mark,wires in the right order, it will start. Final timing set to whatever dist unit you are using. Total advance is like 32/34 degrees.How can I properly time a VW 1600cc air-cooled engine w/ a Weber Progressive Carb and get it to start up?have someone turn the distributor as you are cranking on it , also have you had you valves adjusted latley that was a problem i had tooHow can I properly time a VW 1600cc air-cooled engine w/ a Weber Progressive Carb and get it to start up?
That carb is trash trust me please. but you time that motor just like any motor.0 degrees @ idel and aroun 25 degree at 4000rmpHow can I properly time a VW 1600cc air-cooled engine w/ a Weber Progressive Carb and get it to start up?(when the engine cranks - it is turning over...it just ain't catching). Some buddy piss with your distributor? Or the wires in the cap? If so, you have to start at the basics. Turn the engine over by hand until the notch in the pulley matches up with the engine halves(about 12 oclock) Now, Pull the cap. Leave all the wires connected. Pull off the rotor so you can see the points. Turn on the key so that the dash lights are on and go back to the engine. Now you need a stick(like a popsicle stick) If the points are together and touch each other....spread them apart with the stick...you should see a small spark jump the point contacts. If the points are spread apart, push them together with the stick and let go. There should be a spark. (the stick is used as it is insulative to your body and to any other metal part.)

If you got spark we know the condenser is OK. Put the rotor back on. It only goes on one way - if you look inside the rotor, you will see a bump that will corresponse to the notch in the distributor shaft. Note which way the rotor is pointing. Look at the cap. it also goes on one way. What wire is the rotor pointing to. It should be pointing at number one which should be on compression stroke( a way to confirm that is to remove the valve cover on drivers side and check valve lash on the first cyclinder. Both rockers should be loose. If one is pressed down, then you need to rotate the engine 180 degrees and realign the notch on the pulley again. If both rockers are loose then you are on compression stroke.

Which way is the rotor pointing ? Is the corresponding wire going to #1 cylinder? Number 1 is behind the driver side rear(near exhaust pipe)(Fix it and the next wire clockwise on the cap will be #4(which would be on passenger side closest to passenger. Is the wire right? And next number 3 (driver side-behind driver, and then2(passenger rear near tailpipe). The wiring is set.

While the valve cover is off, might as well check the valve lash(with a feeler gage.) about 8 thousands of an inch for both intake and exhaust. Then rotate the engine backward 360 degrees and #2(on the passenger side) both valve rockers should be loose and gap same as #1, and rotate 180#3 and 180turn#4.

Now valves are set correctly for improved performance.

Close everything up and try starting. It should start and stay running.

If not maybe too much fuel is being dropped in there?

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