Wednesday (Tha day off!)
Well, I was thinking about it and I remembered that when I pulled the cylinder head back off that there was some coolant in the cylinders... Now this is pretty normal, but I tend to worry so of course I was hoping against hope that my new head hasket wasn't leaking (something I'll continue to worry about). BUT the reason I'm bringing that up now, is because it also dawned on me that if there was coolant in the cylinders then some coolant probably got down the oil passages as well. So we begin our big day with an oil change:
Cool. That takes care of that.
Having done that, we can go back to our regularly schedule program. ON WITH THE RTV!
One bolt here, one connector there, hook this hose to that and soon we have:
Seems like we've been here before...
Anyhoo. Remember I mentioned there was a waterfall from the gas tank? Well I have a plan for that. I don't really want the truck running while I'm under it looking for where the gas is pouring from, but I remember on the L-Jetronic system installed on my Alfa if you push the MAF door open a little, it will turn on the fuel pump.
So that's what I do:
With the socket wedged in there, I can hear the pump running. I high-tail it to the passenger side of the truck and peer in and underneath:
Nuthin. Not a drop to be seen anywhere.
Normally this would be a win, but again I DIDN'T TOUCH ANYTHING! Where did the leak go??? I mean, it was a big one too!
This had me so bothered, I actually had to check and see if the stain on the driveway was still there to make sure I wasn't just crazy. It was, and I wasnt.
Heck with it. Heading back to the engine compartment, I do see a bit of fuel spraying out from the pressure line on the fuel rail:
Don't let that photo fool you. That banjo-bolt is good and tight, but there is a missing copper washer.
I pull it off and it turns out the copper washers were super thin, and I had double stacked them on the fuel rail side of things. Once I got things moved to where they were supposed to go, everything was honkey-dorey
While in there though, I noticed there was another fuel leak at the fuel filter:
No double stacking this time. Instead I had only installed one washer. Luckily I had a bag of copper washers in my spare gasket set and one of them fit.
Easy money.
So that did it for the fuel leaks, time to turn the key and make this happen!
So the first thing I notice, is it's idling much better than it did last time. Last time it sounded WAY advanced and was idling around 500rpms. This time it sounds a bit "exhausty" but the cold idle circuit is obviously working and we're running at 2krpms (Right were it was recommended to be for cam break in). SWEET!
The next thing I notice is the exaust is leaking at the center bolt hole. That smoke wasn't just from my greasy hands, it was from the exhaust as well:
Center bolt bolted up, and we're good to go. No more exhaust leak. Heck! I didn't even know an exhaust leak out of that hole was an option!
Ah well.
Up next I notice a water leak that's hitting the fan and slinging stuff everywhere:
I tried to point at the missing bolt hole in the water pump so I wouldn't have to edit the photo later, but it looks like in doing so I managed to eclipse it a bit. But there it is. I snag a new bolt from the coffee can, slather some RTV on it, and stab it in place.
Time to start the truck again and this time I notice the fan is still slinging fluid! Oil this time though, not coolant...
It turns out that that bolt was loose. It resides right underneath my crank timing marks, so it's reasonable to see how I missed it. Originally I tried to take the crank pulley back off, but then decided a box end wrench was fine and tightened it that way (photo taken after said tightening)
Good. done. Time to start it back up again, and it's STILL slinging oil off the fan!!! Damnit!
Turns out the crank seal on the oil pump sucks. SOOOOOOOOO we're back to this point:
Which isn't so bad since I can access everything from underneath. The only thing I had to do up top was pull the #1 plug and install my trusty rope to keep the engine from turning.
Since the oil pump was out, I decided that in an effort to not have to do this again I would consult with my trusty Haynes FSM and make sure everything oil pump related was installed correctly (and not causing more leaks)
Everything was skookum, but major boo on me for not doing this seal when I had everything apart. I can't say I've ever had one fail, but that was just pure laziness on my end...
ok, so NOW can we start this back up again?
Yes we can
So the engine is sitting at 2krpms, and it's all warmed up. For some reason it isn't kicking down and I'm not sure why. I've just fixed leaks on every fluid system aside from the windshield washer fluid, and I'm poking around my engine bay looking for more leaks when the overflow line from the radiator starts burping.
"Oh dear god, why is it doing that...?"
I should tell you, at this point that I absolutely hate this part of playing with vehicles. First starts can be huge motivators for a project, and that's great. But for me, it's the project's opportunity to have all sorts of weird problems. And when it comes to weird problems after the first start, I tend to diagnose things a lot like Web MD...
That's right. Burping from the cooling system must mean that head gasket is leaking compression into my cooling system and that's why it's overpressureized and filling my overflow tank...
Do not pass go, do not collect $200.
C'ept it wasn't. In the 2 minutes I took to look under the hood, my coolant gauge went 7/8ths scale. My truck was about to overheat.
It's always something simple isn't it?
I take a quick break to let things cool a bit, crank it over to circulate the coolant, and then let it sit some more. Here's where I'm at:
1) the engine sounds REALLY "exhausty". Like loads of timing or valve issues sort of "exhausty".
2) If I blip the throttle, I get a backfire that hits the intake plenum HARD. This happens about one in every three "blips"
3) The idle is WAY too high and it's not coming down when it's warm...
4) The engine bogs when I blip it. It's like a "puhhhh, Vroom!"
To me, this could only mean one thing: Vacuum leak. My 1966 Impala used to do the "puh-Vroom" thing and it was because someone had plumbed the PCV into the intake manifold. Once I found that, I re-routed it to the air filter and all was good. I'm hoping to find something similiar here.
I've got the idle screw all the way cranked down, and the engine is sitting just over 1200rpms. It's not overheating at this speed, so I'm good to take my time.
The brake fluid is some strong stuff, and I spray it on just about everything with almost no results. I do get a bit of something from the #4 injector, but all I had to do was give it a little twist and it seated itself in there pretty well. Other than that, it's spray spray spray and nothin nothin nothin...
Exhausting the whole can, I've found exactly zero vacuum leaks. I give up on that idea and just start disconnecting and capping crap. I start with the power steering pump. It has two lines that go to the plenum...
Nope.
There are 3 or 4 lines that go to the EGR valve. Maybe the diaphragm shat itself?
Nope.
Brake booster, PCV valve, valve cover vent?
Nope nope nope.
Nothing. Not a dang thing was leaking but this HAS to be it. Not wanting to walk away empty handed I put a zip tie on one or two lines to sinch things up, and then I found this little guy:
(nevermind that big open port, that goes to the brake booster. I had it capped prior to this)
Anyhoo, I just happened to have one spare vac cap, so I swapped it out like so:
Still nothing though. Putting that cap on didn't change a thing.
Well, I need a break from vac hunting so I decide now was as good of a time as any to dial in the timing.
Look at that beaut! It's almost as old as I am, eh?
Anyhoo, to do this properly you're supposed to short out two pins on your diagnostics port and that will drop the computer's advance. From there you just stab it at 5btdc and done!
Except I never had good results with jumping the connector. The TPS is always off, or there are two part numbers of TPS with different resistance values and I got the wrong one, or SOMETHING to where it just becomes an all day headache trying to get my timing set right. BUT last night I did read on the interwebz that you can set it at 12-advanced and that's the same thing, so that's what I do.
Done and done.
The exhaust is a little less "poppy" but not by much, and it's still backfiring out the intake, so mad scramble follows.
I check my valve clearances first, as I figure that's the next most likely issue. All are a hair too tight, and one or two are probably bad enough to actually need adjusting so I hot set it to factory specs.
Turn the key and things have improved but not by much. Oh, and I can REALLY hear my valve train now! Still though. "Puh-Vroom" and the occasional backfire into the plenum.
Again, I go over all the connecting points for hoses, gaskets, and seals (this time with WD40, as I'm out of brake clean). Again, I find nothing.
Scratching my head, I decide that setting the timing at 1200rpms instead of 800rpms is probably not the same thing and the engine probably could use a bit more advance. Again, I get out my gun, and I decide that 15btdc is a good mark to shoot for.
It likes it.
The bog is still there, but it's loads less. The backfire stops completely.
I give it a little more and it likes it even more!
I start googling "more advance with aftermarket cam" and wouldnt you know? It's a thing!
Magic happens and the engine starts idling at 500rpms while I'm doing this, so I open my idle screw up a bit and get it right at 800rpms
WIN!
Cool, so let's see where we're at: (drum roll please) 20deg BTDC
Woof.
That seems like a lot.
Unfortunately my day is just about done at this point. I started at 8am sharp and it's almost 15:00... I've got just enough time to run out and fill up the gas tank and maybe get a car wash
Hoo-Wee, she looks pretty!