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Old 12-29-2010, 09:44 AM
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Originally Posted by lt1silverhawk
UPDATE: Wednesday, 8:10 AM

Due to the rain today, I won't be working on the truck just yet. I'm hoping it will be okay to do some work when the rain stops this evening. Otherwise, I'll try again tomorrow.

At the suggestion of a member on another forum, I did go and buy a fuel pressure and vacuum gauge tester from Harbor Freight:

Having never done a vacuum reading before, I did some research and found this article:

Since I didn't see an emissions label under the hood, I am using the following two vacuum diagrams from Chilton's for reference: CA emissions and Non - CA emissions

So now, based on all the advice given and everything I've read, here is a checklist of what I'll be doing:

- Re-gap the spark plugs to 0.045".

- Make sure no wires are arching. Replace and reroute if needed.

- Siphon out as much of the dirty fuel as possible before resorting to dropping the tank and dumping it out. Replace with clean gas.

- Replace fuel filters.

- Test the canister on the carburetor to see if it the choke is working as Cyclops suggested.

- Do a vacuum reading.

- Post all results.
That canister is a standard choke pull off and secondary lockout. It should open the choke 1/4" or so when the vehicle starts and then the choke should slowly open over the course of 5 minutes or so. It looks like you have the old style choke stove in the manifold. These can be problematic as they rot out or break. The other issue with these is if the wrong intake gaskets are used or the heat riser valve in the exhaust is defective no heat will reach the manifold and the choke wont open. There is a cross over passage that runs through the manifold and the valve in the exhaust closes at low rpm to force some exhaust through this passage to warm the manifold and choke spring. Without this functionality it will still open eventually but it can take a long time.

You need to get rid of that gas to start with and change the fuel filters, that could be half your problem. That filter at the carb is not looking to healthy either.
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