The diaphragm was quite finicky and I have a new respect for dentists as I was using a mirror and doing the job backwards! The diaphragm is made of leather and I suppose after 430,000kms it was tired (not sure if it had been replaced before this or not). This would've been a much more difficult job had I installed the fenders, so I'm really glad I was able to do it at this stage in the project. The diaphragm holds suction so when I removed one of the vacuum hoses and sucked on it, there was little to no resistance or vacuum buildup. This is an approved method for diagnosing this issue, as well as the things in the next paragraph.
Known causes for a faulty diaphragm are abnormal smoke colors out the tailpipe and an increase in idle rpm's. I had noticed both. And most recently, after the truck sat for a number of weeks, I noticed the idle was even higher than before (and it was 1100rpm's when I bought it from the PO and it's supposed to be 650rpm's!). I also would notice a blueish smoke out the exhaust, especially when under significant load at low speeds (ie, wheeling). So hopefully this remedies those issues and the next time I fire it up she's back to normal.
The high/low oil hoses took some scrambling to find all the parts and pieces from around town this morning, but after four different shops/supply stores I was able to get all the pieces! Again, two jobs that are very easy to do when I have complete access to the sides of the engine.
Did a few other little odds and ends like installing the fuel filler neck and custom cutting the 5spd and T-case covers as well.
No comments:
Post a Comment