| Author | Message | ||
     ron (Slantnose) New Member Username: Slantnose Post Number: 1 Registered: 03-2004 |
Hello, I am a brand new owner of a great 94 discovery that just got towed to the dealership for not being able to start. They say preliminary findings are pointing to a bad valve. Not sure how the two could be related but will get additional info tomorrow. At a cost of $2200, has anyone done this work themselves? How difficult is it to replace the heads on these? Any feedback would be greatly appreciated. Thanks, Ron | ||
| Matthew A. Barnes (Discoveryxd) Senior Member Username: Discoveryxd Post Number: 517 Registered: 08-2003 |
It's actually a lot easier than you may think. We just got done with a valve job on my truck. What questions do you have? Matt | ||
| Jaime Crusellas (Jaime) Senior Member Username: Jaime Post Number: 305 Registered: 05-2003 |
ron, My dealer told me I might need a valve job based on the symptoms my truck was exhibiting..occasional misses and loss of power at high speed. Turned out it was a bad plug wire. | ||
| flyor (Flyor) Member Username: Flyor Post Number: 84 Registered: 05-2003 |
I did my heads two months ago. Total cost was way way under $2200. That said, I've probably done a hundered of them. How did they determine it was a valve? If it's just one cylinder it should still run, maybe a little rough but it should still run. Ask alot of questions. Ask what's the compression, the leak down percentage, did they perform a running compression test. How many cylinders are effected? If the valve is burnt, is the injector ok? Does Slantnose refer to a Porsche that has been modified? I hope it's not the one I seen on ebay awhile back. | ||
| ron (Slantnose) New Member Username: Slantnose Post Number: 2 Registered: 03-2004 |
I don't have a lot of info yet - I will ask lots of questions tomorrow morning. I spoke to one of the techs late in the day and she stated that there is a chance it is a bad valve. Could be a variety of other things (I hope), but worst case scenario would be a complete valve job. One of the mechanics stated he got it running and it had a very rough idle. Wires seem pretty new so I am thinking I can rule that out. I purchased the vehicle and it sat unstarted for a week and a half while I was away for work - not sure if this added to the sticking valve problem? All this after not even getting a chance to drive it since I purchased it - drove it home and parked it in the driveway! Slantnose just refers to me being a Porsche fan. I owned a 93 RS and currently own a 03 911. | ||
| Andrew Homan (Andy) Member Username: Andy Post Number: 60 Registered: 01-2004 |
Ron, didn't Porshe make a factory slantnose? We refered to them as 911 slopes. | ||
| ron (Slantnose) New Member Username: Slantnose Post Number: 3 Registered: 03-2004 |
Andy.. they sure did. Here's an update to my above mentioned problem. Turns out they determined 1 or 2 cylinders weren't firing - I'm guessing very similar to Jaime's problem. They replaced the plugs, wires, and rotor for $625. Ouch. | ||
| Sergei Rodionov (Uzbad) Senior Member Username: Uzbad Post Number: 432 Registered: 08-2003 |
So they got 400$ for like hour of work. Not too shabby.. (wires + plugs + rotor cap would be somewhere about 250$, give or take). Where do i sign up ?  | ||
| ron (Slantnose) New Member Username: Slantnose Post Number: 4 Registered: 03-2004 |
Yea.. tell me about it. Here's the breakdown: labor: 4 hours @ $90 = 360 Parts: cap, rotor, wires, plugs = 209 + tax and 'misc'... My mistake for assuming the wires were new enough to skip that step in my troubleshooting... | ||
| Alan Bates (Alanb) Senior Member Username: Alanb Post Number: 514 Registered: 07-2002 |
$90/Hour, OUCH! | ||
| Geoff 93 RRC (Geoff) Senior Member Username: Geoff Post Number: 318 Registered: 11-2002 |
Stick a vacuum gauge on it at idle. A sticking valve will cause the needle to bounce instead of holding a steady reading. |
