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  #11  
Old 10-25-2016, 05:21 PM
Firetacoma Firetacoma is offline
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I replaced some vacuum caps that had rotted away, that may have helped a little.

I don't see any fuel in the glass sight on the carb. Fuel delivery issue? Fuel pump going bad maybe?

Some random pics attached. My vacuum lines are a bit of a mystery to me, done by the PO.

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  #12  
Old 10-25-2016, 05:34 PM
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subzali subzali is offline
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Looks like that might be a '78 carb like my '77 has, but it's missing the HIC box on the front. Looks to me like a typical desmogged vacuum hose layout. You have the EGR (the blue vacuum hose is touching it) but the valve doesn't have vacuum connected to it, and I don't think you want it to unless you have the VSV on the fender that controls it. The EGR valve could be leaking though and causing a lean condition. You'll want to check the condition of the hose connection from the EGR valve to the carb, and for troubleshooting you might disconnect the EGR valve and hose and cap the carb pipe off.

You should definitely see fuel about halfway up the sight glass though. I wouldn't suspect your pump is in bad shape until after you do some flow testing on it. You can disconnect it and have it pump into a 5 gallon bucket and time the rate of flow. But since it seems to run ok once started I wouldn't suspect it.

I'm still thinking timing as an easy thing to check, and maybe pull your spark plugs and check them for color and consider replacing them. New plugs can make a big difference in how it runs and responds to varying conditions.

There are a couple vacuum fittings on the carb on the inboard side under the air cleaner between the carb and valve cover. Check those caps too and replace them if needed. One of them might have a hose running to your distributor for vacuum advance.
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  #13  
Old 10-25-2016, 10:39 PM
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try starting it with the throttle wide open as suggested.
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Old 10-26-2016, 08:15 AM
Firetacoma Firetacoma is offline
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Changing spark plugs is probably a good suggestion. I can't remember if I did that as part of baselining it when I bought it 4 years ago (I have it written down somewhere), but I'm thinking I pulled them and they looked good then.

I can also re-check the timing. I guess it's possible it's off.

It does start a lot better with throttle wide open, but it used to start very easily!

Thank you all for your helpful tips!
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  #15  
Old 10-26-2016, 10:02 AM
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Quote:
Originally Posted by subzali View Post
California model? I should've clarified.
Yep...Placement toward the front, by the radiator.
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