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by Def west ender
Fri Feb 13, 2009 9:42 am
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

(had the head on so took 30mins just to secure the DTI down and through the spark plug hole) Any chance of a brief description on how you did that? I spent a few hours devising bad ways to this and then decided to give up until the weather warmed up a bit! The DTI came with an angle bracket and a 6...
by Def west ender
Sun Jan 25, 2009 12:40 am
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

Right!!!! I reckon it's fixed!!!!!!!!!!!!!!!! :P :P :P :P :P :P I hope this post doesn't jinx it :lol: Followed ChrisJC's instructions, took the inlet manifold off, then used the DTI guage (had the head on so took 30mins just to secure the DTI down and through the spark plug hole) got ATDC, checked ...
by Def west ender
Thu Jan 22, 2009 6:14 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

With the piper cam that I have, it gives you the angle which is max lift at 112deg ATDC for inlet and 112deg BTDC for exhaust. Of course you'd need that info for your cam... Chris. Hi ChrisJC, I'm going to tackle this tomorrow at a friends garage (fingers crossed) I just have the standard cam thoug...
by Def west ender
Sun Jan 11, 2009 10:52 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

I'm going to tackle taking the inlet manifold off in the next week to try and find if mines been put back a tooth out, any tips would be of help as I'm doing this with the engine in the car so it may be a bit of a pig to get to certain bits. I was thinking of just doing a compression test if the cam...
by Def west ender
Fri Dec 19, 2008 10:10 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

Just found this, not sure if it's of interest to anyone else? RPI £145 http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&Item=200287221577&Category=31349&_trksid=p3907.m29&_trkparms=algo%3DLVI%26its%3DI%26otn%3D2 Another ebayer £60 http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&It...
by Def west ender
Thu Dec 18, 2008 10:02 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

Cheers Mike for the info, I've got over Christmas to work out my best options, looks like the distributor is the first on the list, it'll be under the tree hopefully! :D Ian from Rpi sent me these links (in previous posts too): Our complete ignition list http://cgi.ebay.co.uk/Land-Rover-V8-engine-Ig...
by Def west ender
Thu Dec 18, 2008 2:09 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

Wow, cheers for the the detailed reply, thanks for putting the time into it. 1/ the plugs are new 2/ distributor looks in good shape, but don't know how many miles it's done and don't mind spending on a new one if it'll help. 3/ leads rotor arm and cap all new 4/ backfire: I put my AFM back on and t...
by Def west ender
Thu Dec 18, 2008 11:14 am
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

Also check your engine's reaching it's full running temperature, has the correct thermostat which is not stuck open. My hotwire Disco was running rich because it wasn't getting hot enough so the ECU overfuels. Not apparent on the temp gauge on the dash. The Disco has an 88 degree thermo and enrichm...
by Def west ender
Wed Dec 17, 2008 8:33 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

Cheers Kev, useful info, I wonder if mine is the same. Just to pick your brains a little more... ...when you say ran OKish can you describe it a bit more. Mine seems 10-20% down on power, revs round to 5,500rpm but sounds a little harsh and is a bit lumpy through the rev range (more so on low revs),...
by Def west ender
Wed Dec 17, 2008 4:44 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

I agree, although I'm not saying what he offered me won't solve the problem, he didn't really listen to what I had to say before he told me what I needed. The gas installer said it could be that the cam could be 1 notch out on the timing, I can't imagine this is what's wrong, would it still run?? as...
by Def west ender
Tue Dec 16, 2008 9:34 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

I called RPi and talked to someone called Ian, he said that these 2 items would do the trick, any thoughts? Since it's running massively rich on petrol too, surely there's a common fault as these items seem to be targeted at just LPG. Thanks again guys. http://cgi.ebay.co.uk/Land-Rover-V8-engine-Ign...
by Def west ender
Tue Dec 16, 2008 5:14 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

by Def west ender
Tue Dec 16, 2008 4:27 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

Do I taike it that the engine change was done by someone else? Are you sure it's a Hotwire system if the vehicle is 1984 it could be a flapper system for a 3.5! What does it say/ numbers on the airflow meter? Kevin. Aha, this maybe the problem. Can't find the ECU, I believe it's behind the bulkhead...
by Def west ender
Tue Dec 16, 2008 2:51 pm
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

Which ECU is it, If its from an earlier engine of smaller capacity won't it meed modifying to run properly with a 4.6, also is it a standard cam as most uprated cams will upset a standard hotwire system. If your running an earlier front cover to drive a distributor was it just bolt a drive cog on t...
by Def west ender
Tue Dec 16, 2008 11:00 am
Forum: Engines Area
Topic: Really bad MPG on Rover V8 4.6 - Help!
Replies: 47
Views: 25710

ChrisJC wrote:
Has the LPG system been set up properly with a gas analyser?

Chris.
Yes it has, it's been to 2 places, last guy seems to really know his stuff.

If the Hotwire was faulty would/could this effect the ECU's timing at all?

PS: Cheers for all the help everyone, really appreciate it.

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