1998 s70 will not run

Post by **erikv11** » 13 May 2013, 12:57

OP is "Original Poster" that is you!

hmmmmm I wonder if 1 and 2 are even firing. That is indeed important evidence Did you do a compression test somewhere in this thread?

Inserting the extension is designed to hold the crank in position, correct. However precopster is suggesting you use the extension for a related purpose, not to hold the crank, but as a method to determine if the crank is in the right place. The extension will not slip in until the crank is on the mark.

He is right about the importance of the crank location and which crank mark you are using: it is absolutely essential the the crank be in the right place. You can confirm that by pulling the starter as he suggested, or by various other methods (two other examples (1) confirm the marks, e.g. post up a pic here; (2) use something like a long zip tie in #1 to confirm that it is almost cresting when the crank is on the mark). The crank mark can be hard to see sometimes, and you don't want to be wrong so he is trying to be super careful about it.

Post by **precopster** » 13 May 2013, 14:50

YOU are the OP, Bob. It stands for original poster.

I was worried you had already referened the crank and timed the engine with cylinder 1 well below top travel. This could have been very bad for the engine.

The socket holds the crank in perfect timing and also prevents it from spinning clockwise while tightening all the cam sprocket bolts when performing major engine work.

The fouled plugs may just be a result of no ignition and poor cam timing. I would drop a new set of coppers in just to eliminate them from the equation if you haven't already done so.

boballen · Post by **boballen** » 13 May 2013, 18:40

Eric & Precopster, I did a compression test back on page 2 of the thread, All the cylinders were between 190 and 205. The 1 & 2 cylinders were getting spark. I guess I don't know much about it but the spark seemed weak to me. Orange in color. The same from the coil. I would think it should be a strong blue color. I set the #1 to 3mm below the deck using a wooden 1/4 inch dowel. The timing marks were nowhere close to the mark on the block and the marks on the cam cover. So, I pulled the starter off but I can't seem to get that plug out. Does it unscrew or just pry out ?

Bob

boballen · Post by **boballen** » 13 May 2013, 19:00

Never mind that part about getting the plug out. I reread what you wrote in you r post and removed the plug.

Bob

boballen · Post by **boballen** » 13 May 2013, 19:13

Eric, & Precopster,
I'm using a 10 inch extension and inserting 5 inches into the plug hole. How far should it go?

Bob

Post by **erikv11** » 13 May 2013, 20:13

I've actually only used that hole once, and that was just kind of a "gee whiz" I stuck like a 3 inch extension in there to check it out. So I am not familiar with it. But 3 inches was plenty.

Timing marks and the hole etc is all written about in great detail in the Tracey's head gasket tutorial, see page 4 and a little on page 9
Volvo 5-cylinder: How to Replace the Head Gasket
Volvo 5-cylinder: How to Replace the Head Gasket

Post by **precopster** » 13 May 2013, 20:15

You need to be close to timing position. Don't use a 10 incher. All you need is a small 4 inch. When it reaches timing position it will drop in. The motor can still turn backwards but will stop on forward (clockwise) motion as though it's locked.

Post by **erikv11** » 13 May 2013, 20:34

I know this sounds like quibbling over the small stuff to some people, but not to me so I'll just say it once and shut up: I wish you wouldn't call it (the timing mark) TDC. If someone reads a lot of posts that say "TDC" they could easily end up setting their timing wrong - these engines don't use TDC, they use a mark that is a couple teeth before TDC (as you know very well!

).

Post by **precopster** » 13 May 2013, 22:38

The name's Mike. Consider my arse well and truly smacked over that one; I should have know better. In fact I edited that word I will no longer mention out of the post. Now let's get on with giving this poster some ACCURATE info about timing position and marks

boballen · Post by **boballen** » 14 May 2013, 08:07

Mike & Eric, Looking at Tracy's tutorial (that man deserves a lot of credit) he shows a timing mark between the teeth on the crank gear. I have 2 very small "V's" on top of 2 the teeth on the crank gear. Should I be looking for a mark between the teeth. Also, is there any where else in the rotation of the motor where the socket extension will slide in and lock the rotation. I am at a point where it slid in and it will not rotate clockwise any more. This is showing me the timing is way off. About 4 teeth past the timing marks on the plastic cam cover. I started where the cam marks and the crank marks ( between the 2V's on the gear) were lined up. At this point the extension was all the way in. I rotated the motor about 4 teeth past the marks before it stopped turning. Is this the true timing position??

Bob