Okay, so it's more like 'this week' than 'today', but I've been joyriding around every day since getting my '85 back on the road last week after taking her down to replace the in-tank fuel pump, flush fluids and the OVS, re-torque the head, rejuvenate the leather seats and perform a bunch of other miscellaneous maintenance, cleaning, and inspection.
She started right up and ran great after sitting for five weeks, but I think I need to have a look at the Aux Air Valve as she needs to have the throttle cracked to start, and does not fast-idle when cold. Also, she seems to have developed an exhaust leak somewhere around the manifold-to-downpipe connection. I'm hoping it's just the gasket, but haven't investigated thoroughly enough to be sure. I expect to encounter a lot of things like this over the coming months as she's getting driven a lot more frequently - and probably harder (ref. 'Italian Tune-up'
) - than she has for years.
The fuel mileage continues to amaze me, averaging around 35 MPG with little variation from city to highway or with changes in driving style. A big part of this is that most of my driving is above 6000 feet, and the EFI is metering out proportionally less fuel all the time. I look forward to someday getting her down to sea level and letting all 115 horses out of the corral.
The one disappointment is that she still seems to have a fuel-delivery issue when the level gets much below half a tank. The new pump started moaning about 40 miles into the shake-down cruise, and I felt a slight hesitation under acceleration through a hard left-hander shortly thereafter. It only took 7.5 gallons to fill up, and I can still hear some pump noise now where I hadn't noticed anything at first.
Given the aforementioned superlative fuel mileage, it won't be difficult to keep the level above half, but I'd like to know that I can take it down closer to empty in a pinch without a problem. The main pump and filter were replaced less than 2 years and 2000 miles ago along with the in-tank pump by the PO's shop, and the old pump screen looked pretty clean, but I suppose it's possible things are crudded up with dirt/rust/varnish, causing back-pressure problems for the new in-tank pump. I installed it with a proper stepped hose, screen, and even an NOS rubber isolator in the bracket so there shouldn't be any problem lifting fuel from a low level.
So far so good otherwise, and I'm loving the open-air driving experience!