dan8400
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| posted on 25/2/15 at 08:51 PM |
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OT: saab 9-3 timing advice please
Hi everyone.
After fitting a new turbo (and two rocker arms) to the above car the camshaft seems to not be at TDC. I can find the notch on the crank pulley and
have that lined up and I think I have the cam lined up now too but how do I time the diesel pump?
It is a 2003 model 2.2 tid and has a timing chain. Does the pump need to be in the correct place (timing wise) or doesn't matter? It seems to be
a mechanical type injection system (but I may be mistaken, not really looked at that in detail yet)
Any help appreciated
Thanks
Dan
[Edited on 25/2/15 by dan8400]
Hey - That's Journey!!!
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obfripper
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| posted on 25/2/15 at 11:02 PM |
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Dan,
The pump does need timing with the crank/cam, iirc the timing plates and pins are needed to get the pump set up correctly, and set the keyless cam
sprocket.
You might have to find a friend at a vauxhall specialist who could lend you the tools, or Sealey VSE242 is the right patterned kit.
I haven't done one in about 10 years, but i have had a few with cracked cam sprockets that have chattered, they crack between the holes in the
sprocket and the tooth web, it's one to look out for.
Dave
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dan8400
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| posted on 25/2/15 at 11:06 PM |
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Thanks Dave
How can I get the pump in the ball park? Are there any marks or holes to line up?
Hey - That's Journey!!!
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obfripper
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| posted on 25/2/15 at 11:17 PM |
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IIRC the crank is locked by a large pin, and the pump by the smaller pin to set the pump/lower chain timing and tension.
Then the cam is timed by the slot that drives the vac pump.(the special tool goes in the slot and vac pump boltholes)
Then the cam sprocket is tightened up once the chain is fitted and tensioned.
If only the head has been removed, the pump timing will not have been altered, and only the cam timing will need setting.
Dave
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dan8400
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| posted on 25/2/15 at 11:22 PM |
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Nothing removed. Head stayed on. Had turbo failure. Took two rockers out and I noticed the cam was out. Will the fuel pump have jumped out of sequence
too?
Hey - That's Journey!!!
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obfripper
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| posted on 26/2/15 at 12:30 AM |
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I'll try to dig out the timing instructions, and pdf them for you.
If the timing is out, depending which chain has jumped the pump timing may be out.
If the lower chain has jumped, it will affect the pump and cam timing equally, whereas the upper chain jumping will only affect the cam timing.
You may need to remove the chain covers to be able to reset the chain timing, i cant remember offhand.
I take it the engine has not been turned backwards at any point, alot of chain engines are prone to slipping out of time like this.
What was the problem with the original rocker arms?
If they have snapped, the timing may have been incorrect at the point of turbo failure, if there has been a loss of oil pressure, the chain tensioners
may have allowed the chain to run slack and jump to cause incorrect timing.
You may want to check out the oil pump function before starting the engine, as a new turbo will not last very long with poor oil pressure/flow.
Dave
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dan8400
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| posted on 26/2/15 at 12:37 AM |
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Yes they snapped. May have run the engine backwards when rocking the car in gear. Replaced turbo. Cleaned hoses and intercooler. Oil pump is fine. I
have checked this. Pretty confident of cam setting with the dimple etc and have the crank pulley notch on the mark on the casing. Just not sure about
the fuel pump. It's the last piece in my puzzle. If I can set that I think I am there
Thanks
Dan
Hey - That's Journey!!!
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