Day 9 - More Leaks
01/28/06 - Who's been playing darts with my windshield? Today was an exceedingly productive day, but not in the way I'd expected. On Day 8 I mentioned that I was going to buy some gas line and clamps. As it turns out, the auto parts store didn't have exactly what I wanted, so I wound up buying some other miscellaneous bits, including a windshield repair kit. I bought 50 feet of fabric-reinforced nitrile gas line hose and a box of appropriate hose clamps off eBay, intending to use these materials to bypass the leaky gas tank selector switch.
As it turns out, in the interim I discovered that the selector switch has a packing gland, not an O-ring type seal. Simply tightening up the gland has, as far as I can tell, fixed the leak. This is good, because I didn't want to tinker with the fuel lines.
Today was such a wonderfully warm, sunny day that I took a vacation from all my other responsibilities and spent some quality time with the truck. First thing I did was apply the windshield repair kit, as you see from the photo above. Speaking of that photo, while looking at it to edit this page I realize that the passenger side wiper blade parks too far up, so it's always scraping the weatherstripping. Argh! I've got some wiper blades on order - I'll have to fix this problem before I install them.
Then I went under the hood intending to pinpoint exactly where my oil leak is coming from, though I was pretty sure already. I had the engine running, and I happened to glance at the carburetor. Aha!! I caught the circled joint in the act of dripping gasoline onto the engine. On inspection, it transpired that the hose between gas filter and carburetor was totally fried. No wonder this truck is always slow to start when it's been sitting for a while - the gas line is empty! So my investment in rubber tubing turned out to be a great thing. I probably should have replaced the other rubber gas lines in the neighborhood, but I wasn't feeling up to it.
Here's the new hose in position. At this point I should probably mention that things have gotten weird: I don't know what engine I have. It's definitely an IH 4-cylinder, but it doesn't exactly match up with what's in the service manual. The manual shows a flame arrestor in a thick hose that runs from under the ignition coil somewhere up to the air cleaner. My truck doesn't even have this hose! Furthermore, the oil dipstick in the manual is on the driver's side of the engine, towards the back - just below and behind the fuel pump. The fuel pump itself looks quite different - mine has more plumbing. In the manual, the cylinder head cover has the oil fill cap on it. My cylinder head cover is solid - no hole. The oil filler is a separate vertical tube running up from the bottom front of the engine, slightly on the passenger side of center. There is a tube coming out of this filler at right angles, running off to somewhere under the carb.
Well, enough of that. Here are my leaks, both of them are bad gaskets, and one of them is going to be a royal pain to fix. The cylinder head cover is easy enough to remove (and will be cleaned and repainted when I do so; this would appear to be an ideal moment to replace the spark plugs as well). The other leak - which is really difficult to photograph - is on the other side of the engine, where the "valley pan" would be in a V8. The shop manual describes this as the tappet cover, and judging from the amount of sludge around it, this has been leaking for a long time. In order to get at this, I need to pull the water pump and perhaps a couple of other things. NOT a trivial job, and some of the stuff that I need to pull will need new gaskets when I put it together. A fairly mammoth job.
It's perhaps anticlimactic to state here that this is the first day I actually put the truck in gear with the engine running. It sure takes some getting used to. Next action item: take off the steering wheel and straighten it.
Argh again. While driving the truck, I notice that the fuel and temperature gauges are oscillating. Seems like I will have to look at the regulator as well!