This course will teach you about this truly amazing machine. From its early beginnings as a steam engine, the piston engine has revolutionised the way we live, work and travel. Welcome to the pre-computer world.Without exception, the reciprocating piston engine is the most influential machine ever invented by mankind. You may want to pick up a vacuum gauge and timing light too. Engine analyzers are cheap and include a tachometer.
#Xnip motor firing order how to
On the other hand the automatic choke can be refurbished to work well, by simply getting a rebuilding kit, you get parts and instructions on how to set up the whole carb including the choke.
#Xnip motor firing order manual
It's far easier for you to buy a manual choked 2100. I've done it on my 4100, using modified parts from a manual choked 2100. The Ford 2100-4100 carburetors are very difficult to change from automatic to manual choke and visa versa. The firing order cast into the top of the intake is no longer accurate, but you didn't use it anyway. I doubt you will see any difference, and swapping the cam is too much trouble, without a good reason. The 351 firing order supposedly puts less strain on the main bearings. My 351 has a 4bbl 4100 model with the 1.08" venturis to cover both needs. It may give better MPGs and low end torque at the expense of a little top end power. Maybe whoever swapped in the 351 just kept the original 302 carburetor. The 1.08" veturi diameter is the size sold on 302s. The capped nipple in front of and below the choke housing is the ported vacuum source for the vacuum advance on the distributor. To heat the bi-metal spring in the choke cap opening the choke as the engine warms up, you need an electrically heated choke cap.
The auto choke needs air to work and the hot air plumbing is missing. The choke connection you point out needs a hose to the capped nipple above and behind it to supply filtered air. That should cure the run on, after the ignition is shut off. Now that you have that corrected, the idle is much stronger and needs to be slowed at the idle speed screw by the throttle lever and shaft to something like 650 RPM, by turning it counter clockwise. The weird 1-5-7-2-6-3-4-8 is for some other engine line. Your cam must be the early 289-302 version. Sometime around '90-'91 Ford changed the 302 firing order to match the 351 order. So without knowing what cam you have, you can't be sure what the firing order is. The cams for Windsor small block Ford engines will "fit" in either block. The firing order is determined by the cam. Since the choke is temperature activated and I live in a warm climate, how much of an issue is having that just open? Any reason I should plug it, or would that make matters worse? It just sits there pulling a strong vacuum all the time. One other thing, on the picture below, I circled what I believe to be the choke tube connection that should go to the exhaust manifold. Unfortunately, when I got home and shut it off, it dieseled like crazy! I finally had to keep pressing on the accelerator to flood it to get it to die. Took it down the road a couple of times and couldn't get the thing to backfire to save my life! It ran rough as all get out, so I tried 1-5-4-2-6-3-7-8 and she purred like a kit drunk or milk and cat nip. I changed it to what several sites said would be the 351w order, 1-3-7-2-6-5-4-8. I have paperwork from the PO showing they had the engine worked on and part of that was "fix firing order", so I of course thought it would be right.
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