So i got an 89 ram50 (2.6) from my grandfather after he passed this year. This truck means a lot to me (Im 30, i remember riding in this truck when I was just 5 or 6). Ive done a bunch too it to get it highway reliable. When his health started to decline, so did the maintenance on the truck.
I bought the weber 32/36 kit from webercarbsdirect, and the install was a breeze. Converted it to electric fuel pump that supplies the correct fuel pressure (pump is rated at 2-3.5psi without a regulator).
Here are my issues. The most concerning one is pinging/detonation. I thought I had that issue lined out when i first put the carb on the truck. I retarded the timing 1 degree at a time until it went away, then I retarded it 1 more degree after that. This is when the temps were still 80+ degrees out. Now that the cold weather has set in, the pinging came back, and I had to retard it more than it should be to compensate, as well as adding some 93octane fuel. It also diesels pretty bad when i shut it off when up to operating temp. Ive gotten around that by leaving it in drive when I shut it off (keeping a load on it prevents the dieseling).
Then today I pulled the plugs (new, less than 1000 miles) to have a look at them, and it is obviously running a little lean, hence my pinging and dieseling issue. I had suspected this a few times before, because the truck doesnt gain much power when the 2nd barrel opens up.
I have followed the lean drop mixture adjustments provided by both weber, and the guide i have found on this site to no avail.
Anyone else have these issues with the stock jetting on the 2.6?
In the last 1000 miles, I've replaced the fuel lines, distributor cap and rotor, plugs, and plug wires, belts, replaced every fluid in the truck all the way down to the brake fluid. Ran some fuel system cleaner through a tank of gas, etc. Im convinced it needs rejetted.
I must add, that ive never had any hesitation, except when the engine is cold, which is to be expected. It just pings, and lacks top end power.
Any idea where I should start?
Thanks!, Brian
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