Discovery I Talk about the Land Rover Discovery Series I within.

Plug Fouling 96 D1. All plugs.

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Old Jan 27, 2011 | 03:03 PM
  #201  
Spencerfitch's Avatar
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Maybe a testbook ecu reset would work? Who knowsNwhere all guessing. I don't think I'd have the patients to install 11 sets of spark plugs.

Heres a question I don't have time to read back. Are you sure the intake manifold and butter fly valve are all correct with all three springs attached to the throttle?
 
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Old Jan 27, 2011 | 04:01 PM
  #202  
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I damn sure won't be putting any headers on mine after reading this.
 
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Old Jan 27, 2011 | 04:42 PM
  #203  
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Trucks at the shop in Chattanooga now, so I have no real way of looking it for any more troubleshooting of my own. If and when he finds the solution I'll post what it ended up being.

I've gotten really good and changing plugs... I can do them all in about 10 minutes. I actually carried a new set with me on the drive to the shop to make sure I got there.

You can smell the raw fuel. That burns your eyes type of exhaust. I've ran it with the intake open, to remove any restrictions form the air cleaner etc, no real difference.

The headers are a little bigger than stock, and there is 3 inch pipe all the way back that y's into a single flowmaster... so the final size is only about 1/4 inch bigger than stock... not a huge difference. Many others are running similar setups with no issues.

I'm kind of assuming, but I have a feeling the first thing he'll do it put all new O2 sensors in. My original ones tested fine on his other tester (not the testbook) Leak down test has been down, fine. Compression fine, vacuum fine. By all the test so far it should be the best damn running rover ever... everything test fine. It's what has got me stumped.

the only issue from his first round of testing was the head gaskets are leaking a little, but not enough to really worry about. besides the drippy plug I have in the original oil pan the things sealed up tight. (I have a new pan sitting here for it).

Anyways, I'm moving my attention over to my 87 300D, I blew the head gasket on it, and will be working on replacing that over the next couple weeks (along with some other repairs to the car like a leaking water pump which caused the issue in the first place). Just waiting on the parts to show up. I have no idea when I'll see the rover again, I'm not expecting to see it for at least a couple weeks. I'm not interested in seeing it unless it's fixed.
 

Last edited by ngarover; Jan 27, 2011 at 04:46 PM.
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Old Jan 27, 2011 | 06:27 PM
  #204  
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this could all boil down to a screwy ecu.. They can do some crazy things when bad.
 
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Old Jan 27, 2011 | 07:31 PM
  #205  
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Well, all we can do is hope for the best. I am wondering if there is anything that could have gone wrong when the intake was done...or something. Hopefully he gets back to you and says he fixed it for good without driving it off a dock.
 
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Old Jan 27, 2011 | 07:41 PM
  #206  
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Yeah, it would be nice to find out what it all boils down to.
 
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Old Jan 27, 2011 | 08:00 PM
  #207  
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Has he actually checked the ECU? I mean check it
 
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Old Jan 28, 2011 | 05:37 AM
  #208  
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On the ecu, I know that the guy that has it has swapped in a known good ECU etc, MAF, and a host of other parts. He'll really thought for sure it was those ford injectors causing the issue and was really surprised when I brought it back with the original injectors and nothing had changed. On that note, the ford injectors seems to have worked fine. So I'll keep them around as a spare set in cause I need them in something else.

I guess it's one of the reasons I've gotten so pissy about the rover 4.0... It's a simple engine. There is no reason it should be this hard to fix. The engine itself, is about as simple as it gets...The damn engine management system is what is making this a nightmare. BTW, the grounds have all been checked and are good. (the truck has zero rust and the the connections look as good as new) You could eat out of the engine compartment it's so clean in there. Fact, it's so clean, you don't even get dirty changing plugs etc. I tore down the intake and replaced the injectors and didn't even get my hands dirty.... that's pretty damn clean.

With the access to his testbook I'm sure it will get sorted out. I'm also sure it's going to cost me about as much as I already have in the truck to figure it out. It's not going to surprise me one bit when I hear back and find out the bills over a grand... Had I not done so much other work to it, and if the truck had not been in such outstanding physical condition It would have been a parts trucks long ago.
 
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Old Jan 28, 2011 | 06:39 AM
  #209  
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Can I get those injectors from you? I think one of mine are leaking when hot.

Oh and I probably wouldn't have told him to Fix it or sell it. He'll find a way to make money off it.. Anyways good luck.
 
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Old Jan 28, 2011 | 07:55 AM
  #210  
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That support my contention that Looks Bad but Runs Good is much more preferable than Looks Great but Runs Bad.

I'll take function over appearance anyday when it comes to Rovers.

With women, that may be a different story, however even there there is a lot to be said for function over beauty.

At least you got your Benz to fall back on. Love those W126's. Nice big body and a hell of a cruiser.
 
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