imported_brackie
16-06-2005, 07:36 AM
Really, the only way to fix this is to rebuild the motor...But, the mod. below worked for me.
History. After the 1.5 diesel Golf had been on the market for a couple of years the runaway problem emerged. The diesel has an extremely high compression ratio of 23.5:1 , so you can imagine the blowby potential! Oil splash and mist were further exacerbating the problem as they could exit the camshaft cover and be drawn directly into the intake manifold without even being drawn through the air filter. VW were very concerned and brought out a modification kit to improve the crankcase breathing so that the fumes being taken into the air intake didn't come solely from the camshaft cover. The kit consisted of a plate to replace the existing connection to the vacuum pump and had 2 hose connections instead of one, a hose that reached to the existing camshaft vent hose, and a "T".
When it happened to me! I'd never had the runaway problem with former Golf diesels (however I did have it with a Hilux 2.2 L series diesel...Had to put her up against a tree to stop her!) After cruisin' the 'net I couldn't find a kit so I decided to make my own.
I just modified my breathing system with great success...That means it hasn't "runaway" since I did it! It's really simple.
1. Buy a couple of feet of heater hose (off the reel), a 13mm plastic irrigation "T" and a 19mm plastic irrigation "T"
2. Cut the hose from the crankcase to the vacuum pump and insert the 13mm 'T"
3. Cut the camshaft cover hose at a convenient point and insert the 19mm "T"
4. Plumb the heater hose between the 2 "T"s
Use hose clips if you must (I didn't) and away you go! After I did the mod (by the way it's basically the same as the official VW mod that you can no longer get) I drove 300km at 100kph and she didn't run away. Before I did the mod. I drove exactly the same route and she ran away 3 times...I eventually had to take another route home via back roads. Since then she's done 3000km with no runaway. All of this running has been done in cool conditions. Whether the mod. would be successful on the mainland in 40 degree temps. I don't know, but the problem seems to be brought on by high engine speeds rather than high engine temps.
Later diesels have a camshaft baffle to reduce oil splash and a screen/filter device on the crankcase breather just to finish the job. I'd like to get my hands on these!
If you'd like to look at a thread on this problem and see some pics. go to:
http://vwdiesel.net/phpBB/viewtopic.php?t=1490&postdays=0&postorder=asc&start=0
But really, to fix it you must rebuild the engine!
History. After the 1.5 diesel Golf had been on the market for a couple of years the runaway problem emerged. The diesel has an extremely high compression ratio of 23.5:1 , so you can imagine the blowby potential! Oil splash and mist were further exacerbating the problem as they could exit the camshaft cover and be drawn directly into the intake manifold without even being drawn through the air filter. VW were very concerned and brought out a modification kit to improve the crankcase breathing so that the fumes being taken into the air intake didn't come solely from the camshaft cover. The kit consisted of a plate to replace the existing connection to the vacuum pump and had 2 hose connections instead of one, a hose that reached to the existing camshaft vent hose, and a "T".
When it happened to me! I'd never had the runaway problem with former Golf diesels (however I did have it with a Hilux 2.2 L series diesel...Had to put her up against a tree to stop her!) After cruisin' the 'net I couldn't find a kit so I decided to make my own.
I just modified my breathing system with great success...That means it hasn't "runaway" since I did it! It's really simple.
1. Buy a couple of feet of heater hose (off the reel), a 13mm plastic irrigation "T" and a 19mm plastic irrigation "T"
2. Cut the hose from the crankcase to the vacuum pump and insert the 13mm 'T"
3. Cut the camshaft cover hose at a convenient point and insert the 19mm "T"
4. Plumb the heater hose between the 2 "T"s
Use hose clips if you must (I didn't) and away you go! After I did the mod (by the way it's basically the same as the official VW mod that you can no longer get) I drove 300km at 100kph and she didn't run away. Before I did the mod. I drove exactly the same route and she ran away 3 times...I eventually had to take another route home via back roads. Since then she's done 3000km with no runaway. All of this running has been done in cool conditions. Whether the mod. would be successful on the mainland in 40 degree temps. I don't know, but the problem seems to be brought on by high engine speeds rather than high engine temps.
Later diesels have a camshaft baffle to reduce oil splash and a screen/filter device on the crankcase breather just to finish the job. I'd like to get my hands on these!
If you'd like to look at a thread on this problem and see some pics. go to:
http://vwdiesel.net/phpBB/viewtopic.php?t=1490&postdays=0&postorder=asc&start=0
But really, to fix it you must rebuild the engine!