

| Subject: | Re: Vanagon/Jetta timing issue. Use RPM sensor hole to find #1 TDC mark? |
| From: | neil N |
| Date: | Tue, 15 Apr 2008 08:48:47 -0700 |
Hey neat tip! I actually have a brand new gun. I haven't used it yet (!). Maybe it has that feature. If you need extra muscle to move the heater ( I hope it doesn't need replacing!), give me a ring. That way I can bring over your parts and the bench seat. Neil. 604 913 1689 On Tue, Apr 15, 2008 at 8:40 AM, Jake de Villiers <crescentbeachguitar@gmail.com> wrote: > If I wasn't backed up to the eyeballs I'd come over and turn the key for > you. > > My timing light has an 'always on' setting that's pretty useful. Point it > at the ceiling of the van and go crank - it flashes on the ceiling. :) > > I've got a customer coming at 10:00 am and my mom's water heater is leaking > (!) but I'll try and give you a call. > > > On Tue, Apr 15, 2008 at 8:30 AM, neil N <musomuso@gmail.com> wrote: > > > Hi Jake. > > > > One of the "to do" things was to get a remote starter. > > > > I'll check for spark. > > > > Thanks! > > > > Neil. > > > > On Mon, Apr 14, 2008 at 11:55 PM, Jake de Villiers > > > > > > > > <crescentbeachguitar@gmail.com> wrote: > > > Do you have spark? Maybe the best thing your timing light can do for > you > > > is determine whether you have spark or not. If its not making a spark > > > there's no point in chasing down whether the ignition or valve timing is > > > right or not. > > > > > > Step back and check for spark. > > > > > > If that's good, pour some gas in the manifold and see if it kicks. > > > > > > If there's no spark, get back to us! :) > > > > > > > > > On Mon, Apr 14, 2008 at 11:31 PM, neil N <musomuso@gmail.com> wrote: > > > > > > > Hey Jake. > > > > > > > > Yah that was one of the first things I did when checking for TDC. > > > > Feeling for air coming out of spark plug hole. I also used a wood > > > > dowel to fine tune. There is also a mark on the crank pulley that > > > > lines up with a stationary mark on the timing belt cover. This > > > > indicates TDC. > > > > > > > > Here's what I did to the engine prior to install: > > > > > > > > replaced timing belt, serp belt, water pump, switched to a non - AC/PS > > > > setup in the process, (used a VR6 coolant pump pulley), rotor, cap, > > > > plugs, some gaskets/o-rings etc. > > > > > > > > I removed the distributor to inspect it. > > > > > > > > As for the timing belt, I did make marks on the cam, but wasn't > > > > certain about my markings (or possibly lack thereof) and had doubts > > > > about timing, so did it by the book. I installed the distributor once > > > > cam/crank were timed together, by lining up the rotor with the #1 > > > > mark, and installed it. When I rotate it by hand everything stays > > > > lined up. > > > > > > > > I never saw the engine run. > > > > > > > > One thing I may still be confused about, is the intermediate shaft and > > > > its' role in things. It drives the distributor, but AFAIK, if > > > > distributor not installed, it doesn't need to be in any special > > > > position in relation to the cam, crank and distributor. > > > > > > > > There are likely some other bugs keeping this thing from running, but > > > > given the way it sounds when turning it over, it sure sounds like it's > > > > timed incorrectly. > > > > > > > > I have heard that sound before! :) > > > > > > > > Thanks, > > > > > > > > Neil. > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Mon, Apr 14, 2008 at 11:10 PM, Jake de Villiers > > > > <crescentbeachguitar@gmail.com> wrote: > > > > > Just because the piston's at the top of its stroke doesn't mean its > TDC. > > > > > :) > > > > > > > > > > Pull the #1 plug and turn the motor over by hand with your thumb > over > > > the > > > > > spark plug hole and you'll find TDC on the compression stroke. Fine > > > tune > > > > > with your stick if you prefer. > > > > > > > > > > Did you remove the distributor from the engine for some reason? If > the > > > > > motor was running fine before you swapped it over, the timing's > close > > > enough > > > > > to get you started. Just clip your timing light on the #1 lead, > point > > > the > > > > > light at the mark and crank away. > > > > > > > > > > Pour some gas down its little throat and crank again. > > > > > Is there something you're not telling us? > > > > > > > > > > > > > > > On Mon, Apr 14, 2008 at 10:00 PM, neil N <musomuso@gmail.com> wrote: > > > > > > > > > > > Thanks for the reply Mark. > > > > > > > > > > > > So ok...... > > > > > > > > > > > > If I'm understanding this correctly, as long as #1 is at the top > of > > > > > > its' stroke, whether or not it is an beginning its' exhaust or > > > > > > compression stroke, is determined by how I set the cam? > > > > > > > > > > > > FWIW, I'm treating this engine as if the cam, intermediate shaft, > > > > > > crank and distributor are out of sync with each other. > > > > > > > > > > > > Currently it's timed so when #1 is at TDC, the cam is at its' > correct > > > > > > mark, and the distributor is at #1 mark. I confirmed TDC using > wood > > > > > > dowel in spark plug hole. Crank pulley mark lines up with mark on > > > > > > plastic timing belt cover. > > > > > > > > > > > > But....... > > > > > > > > > > > > In Bentley it says that if the RPM sensor is faulty, the engine > won't > > > > > > start. I'm not assuming it's faulty, but my concern is that if > > > > > > (ignoring cam now) I have #1 set to the "exhaust" stroke in > relation > > > > > > to the gap on the crank gear, that this may be fouling up the RPM > > > > > > sensor, therefore keeping the engine from starting. > > > > > > > > > > > > Neil. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Mon, Apr 14, 2008 at 8:59 PM, Mark Drillock > > > <drillock@earthlink.net> > > > > > wrote: > > > > > > > You have a 4 stroke engine, also called a 4 cycle. (I don't mean > 4 > > > cyl > > > > > > > though yours is that too) > > > > > > > > > > > > > > With a 4 stroke engine it takes 2 complete revolutions of the > crank > > > to > > > > > > > complete a full cycle. With a 4 cylinder 4 cycle that means the > > > crank > > > > > timing > > > > > > > mark will line up for 2 different cylinders at TDC at the same > time. > > > One > > > > > > > will be lined up in its compression stroke TDC and the other > will at > > > the > > > > > > > same time be lined up for its exhaust stroke TDC. > > > > > > > > > > > > > > The firing order of the VW inline engine is 1-3-4-2. That means > > > that > > > > > cyls 1 > > > > > > > AND 4 will be at TDC at the SAME time, but at different phases > of > > > their > > > > > > > valve timing. VW provides a cam timing indicator so the valve > timing > > > > > phase > > > > > > > can be checked against cylinder #1 TDC. Once timing for #1 is > > > correct > > > > > the > > > > > > > others must also be so. > > > > > > > > > > > > > > Mark > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > neil N wrote: > > > > > > > > > > > > > > > Hey everyone. > > > > > > > > > > > > > > > > Haven't got my Jetta ABA 2.0 engine started yet. Timing sounds > > > wrong > > > > > > > > even though I have timing marks "correct". > > > > > > > > > > > > > > > > When engine turned over, it sounds like this: > > > > > > > > > > > > > > > > "whir whir whir" (slight pause) "whir whir whir" etc. It > sounds > > > > > > > > labored with very distinct "whirs" if that makes sense. > > > > > > > > > > > > > > > > Starter is fine, as is battery. > > > > > > > > > > > > > > > > I need to confirm TDC of #1 cylinder, but obviously can't see > the > > > > > > > flywheel. > > > > > > > > > > > > > > > > Bentley shows a gear attached to crank, that RPM sensor > "reads". > > > There > > > > > > > > is a factory gap on gear. (2 teeth missing). RPM sensor reads > this > > > gap > > > > > > > > as TDC for #1 cylinder. > > > > > > > > > > > > > > > > With sensor removed, and gap on gear lined up with RPM sensor > hole > > > in > > > > > > > > block, crank pulley mark is at 9:00 and distributor points > close > > > to > > > > > > > > #4. This somewhat confirms my suspicions. But i"m not certain. > > > > > > > > > > > > > > > > Anyone know if I can use this gap on the gear as reference for > #1 > > > TDC? > > > > > > > > > > > > > > > > This is an interference engine AFAIK, so I don't want to screw > > > with > > > > > > > > timing any more than I have! --- :^) > > > > > > > > > > > > > > > > Thanks, > > > > > > > > > > > > > > > > Neil. > > > > > > > > > > > > > > > > > > > -- > > > Jake > > > 1984 Vanagon GL > > > 1986 Westy Weekender "Dixie" > > > Crescent Beach, BC > > > www.crescentbeachguitar.com > > > http://subyjake.googlepages.com/mydixiedarlin%27 > > > > > > > > -- > > > > > > > > Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco" > > > > http://web.mac.com/tubaneil > > http://tubaneil.googlepages.com/ > > > > > > -- > > Jake > 1984 Vanagon GL > 1986 Westy Weekender "Dixie" > Crescent Beach, BC > www.crescentbeachguitar.com > http://subyjake.googlepages.com/mydixiedarlin%27 -- Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco" http://web.mac.com/tubaneil http://tubaneil.googlepages.com/
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