|01-06-2013 08:14 PM|
I am assuming it ran at one time so the cam chain is not off unless it jumped. Have you done a compression check? Just wondering if you got a hung valve.
I would replace all the tune up parts and try again. Wires, cap, rotor, points, coil and plugs. modual of its coverted to hei.
Replace it all and turn the key either it will fire or you got another issue that needs to be tracked down. But with ignition out of the why its easy to find out what is left compression check and verify the plugs are actually firing. Then most of the problems are out of the way. A shot of either can rule out the carb in a few seconds.
|01-06-2013 07:47 PM|
|BuzzLOL||.. Yes, thumb can be used if you feel definite pressure as #1 piston comes up...|
|01-06-2013 06:05 AM|
|bsa_bob2||I have the timing mark @tdc.verified by the sparking -plug. ?holding the thumb on the #1 cylinder? is this the same thing? bob s|
|01-05-2013 09:37 PM|
.. The cam/distributor rotate ONCE for each TWO revolutions of the crankshaft... this means the rotor can be pointed at #1 sparkplug terminal, but the crankshaft actually ONE full turn off while reading TDC on the pointer/damper...
.. When crank is proper, both valves on #1 cylinder will be closed, and the cylinder will hold air if pressurized with an air hose... (don't let the crank rotate from the pressure on the piston)... then rotate distributor till rotor pointing at #1...
.. Make sure gas in carb. (hold temp. tank above carb. till it's full)
.. Make sure spark at plugs as engine is rotated...
|01-03-2013 06:22 PM|
Looks like the firing order is the same as small block chevy. I will try to post a diagram.
Or maybe a link. Turns out its hard to find one that is correct and usable and also shows the dizzy and cylinders.
|01-03-2013 05:28 PM|
yes i'll go thru the diagram in the book again.Sure is easy to throw money at this kar.must be getting cheaper in my old age thanks bob s
i realize those aren't the best pics. i can get more if needed .
ps "coil ground"............. would be tthe coil holder to the intake manifold right???????thats loose at this time.
|01-03-2013 04:30 PM|
The back fire makes me think the wires are still off. Or something in the ignition is wore out or corroded.
Check the coil wires and the coil ground. Bad grounds will make the timing all over the place.
I would go over all the wires again amd make sure the firing order is correct for that car motor and year. Just to be sure its not an odd firing order.
Did you replace the cap rotor and wires or just clean them up.
|01-03-2013 03:53 PM|
|bsa_bob2||tHis is the only picture i have just shows the motor,and the small gas feed tank hanging up there to the right. I pulled the dis;and went thru the spark plug wires. I moved the distributor to;[pointing at number 1/@tdcon the harmonic balancer, now i have started, squirting carb spray .gas. I advanced the timing just a touch, ccw, this makes the motor want to hit more. Now i have to let the starter kool down .so it stays alive long enough to hear this motor run. Also i am getting a Back fire thru the right side exhaust pipe. Nothing much has come out of it.It has started to .........TRY TO START............... ,everytime now. It gets A little closer each time i advance the distributor. btw the po had it in wrong , the wires now are lined up with the plugs as they should be. thats about it. I am increasing the timing more. Ihave poured alot of gas.with the squirters in the carb ,besides the starting fluid. i am afaid of diluting the oil to much its up about a half a qt.And its thin [not awful thin] there you have it bob thanks for coming back its truly appreciated the pics should be with this post|
|01-03-2013 12:31 PM|
Do you have spark and compression?
Have you tried starting fluid?
just an fyi if the engine started and was sealed shut in the exhuast it could reach 200 psi before it was choked out from clogged exhuast. At 200 psi the muffler will blow open and the pipes will split. So its a pretty good chance that is not the problem.
Tell us where your at pictures and all. We should be able to help a little at least. And pictures get people more involed when they can see what they are trying to help you with.
|01-03-2013 10:35 AM|
|01-03-2013 09:59 AM|
If you can just loosen the bolts that will let it start. You only need a small gap around the pipe and manifold to allow enough air to start.
But i have really never seen an engine fail to start from crap in the exhuast. No i have seen some potato jobs but the taters flew out like bullets on the first pop from the engine. Not really sure you would be able to plug the exhuast so it will completely stop the engine from running. they usally fire a few times around.
If so just saws all the pipes after the manifolds and be done with it. if they are clogged then it wont matter since they need to be replaced anyway. Strange that the pipes would get clogged and not have any rust from sitting in a swamp. Usally things rust out very quickly.
pressure wash the car and engine. then use a steam cleaner to get the engine and other body sections free of crap you dont want to touch. steam will take everything off. paint skin whatever you stick in front of it. Using some clorox in the pressure washer will also help clean things up a bit. best to clean it and strip it out before the car is lost.
I would think the problem is not in the exhuast at all. but fuel or spark.
|01-03-2013 09:53 AM|
|01-03-2013 09:15 AM|
|killeratrod||So do not remove the manifolds & remove the 2 bolts on each side that hold the y pipe. this should be easy spray them today remove & start tomorrow .|
|01-03-2013 08:31 AM|
|vinniekq2||348 is a bb mark I, If its not safe to work on?(doesnt make sense,because someone had to install battery,check points and fuel etc) I dont see how removing exhaust bolts would be any more dangerous than the previous prep work. and if the bolts break,so what,they have to be dealt with at some point in time|
|01-03-2013 08:25 AM|
Iam trying to stay clear of that.reason being. the bolts aren't going to come loose easily The bolt heads .themselves have gotten pretty rusty. anything els possibly.?
I am abit afrid wo work on this car......reason for that is this "hanta virus" that can kill you .i think is abundant in this car. A guy gave me the kar........i probably shouldn't have said yes.My addicted to making these old sbc engines run.being this "348"is A good motor.
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