Search found 131 matches

by Mark Walshaw
Wed Mar 20, 2013 5:45 am
Forum: Race Cars and Track preparation
Topic: Pictures,of racing, group 1 etc,etc,
Replies: 63
Views: 29277

Re: Pictures,of racing, group 1 etc,etc,

Arnold Chatz at the launch of the 3.0l GTV at Kyalami with a few of his trophies. 8)
by Mark Walshaw
Wed Mar 20, 2013 2:02 am
Forum: Fuel, Electrical & ignition (stock Bosch)
Topic: GTV 6 2.5 V6 running problems
Replies: 36
Views: 13448

Re: GTV 6 2.5 V6 running problems

Frustrated update, fuel pressure now correct and stable, fuel pipes flushed and some replaced. Big ground ,battery ground, plenum ground and injector grounds cleaned ( new crimped fitting fitted). Hesitation still there and feels to be getting worse, only light at the end of tunnel is, I had to rins...
by Mark Walshaw
Tue Mar 12, 2013 3:11 am
Forum: Race Cars and Track preparation
Topic: Pictures,of racing, group 1 etc,etc,
Replies: 63
Views: 29277

Re: Pictures,of racing, group 1 etc,etc,

Alfa GTV6 3.0l launch picture taken on the old kyalami straight.
by Mark Walshaw
Tue Mar 12, 2013 2:57 am
Forum: Race Cars and Track preparation
Topic: Pictures,of racing, group 1 etc,etc,
Replies: 63
Views: 29277

Re: Pictures,of racing, group 1 etc,etc,

Arnold Chatz in his modified 2 l GTV, entering Westbank (Leeukop) corner at Kyalami, Pic courtesy of Kevin on his way out to colder climates.
by Mark Walshaw
Tue Mar 12, 2013 2:08 am
Forum: Fuel, Electrical & ignition (stock Bosch)
Topic: GTV 6 2.5 V6 running problems
Replies: 36
Views: 13448

Re: GTV 6 2.5 V6 running problems

Quick update, placed FPR thanks to Dawie, check inertia switch and stripped Plenum down and rebuild, so no air leeks.. Power is back, but hesitation is still there, but seems to be getting worse. Dawie reckons blocked injectors or sticking dizzy.
So the fault finding moves on...... :idea:
by Mark Walshaw
Fri Mar 08, 2013 7:41 pm
Forum: Fuel, Electrical & ignition (stock Bosch)
Topic: GTV 6 2.5 V6 running problems
Replies: 36
Views: 13448

Re: GTV 6 2.5 V6 running problems

Quick update. Started checking from scratch according to Greg Gordon's write up and with lots of help from Kevin via email from the UK. Found fuel pressure to be only at 15 psi a posed to the 35,6 it should be. Check fuel pump and it putting out approx. 100 psi so it has to be Fuel Pressure Regulato...
by Mark Walshaw
Mon Mar 04, 2013 11:02 pm
Forum: Fuel, Electrical & ignition (stock Bosch)
Topic: GTV 6 2.5 V6 running problems
Replies: 36
Views: 13448

Re: GTV 6 2.5 V6 running problems

:D Great will try it tonight and report back what happens. :?:
by Mark Walshaw
Mon Mar 04, 2013 5:30 am
Forum: Fuel, Electrical & ignition (stock Bosch)
Topic: GTV 6 2.5 V6 running problems
Replies: 36
Views: 13448

Re: GTV 6 2.5 V6 running problems

Hi Mats
Thanks for info, will go and purchase some will the leak be noticeable, as in bubbles or what do i look for, (sorry learning experience here). :? :oops:
by Mark Walshaw
Mon Mar 04, 2013 12:46 am
Forum: Fuel, Electrical & ignition (stock Bosch)
Topic: GTV 6 2.5 V6 running problems
Replies: 36
Views: 13448

Re: GTV 6 2.5 V6 running problems

Hi replaced intake tube rubbers with silicone pipe so all good there,sorry for ignorance Mats, but what is starter gas?( Only one i know is used for starting diesel engines) Talking about air leaks is it possible plenum has a hairline crack that i am not picking up? ( has anyone heard about a crack ...
by Mark Walshaw
Sun Mar 03, 2013 10:53 am
Forum: Fuel, Electrical & ignition (stock Bosch)
Topic: GTV 6 2.5 V6 running problems
Replies: 36
Views: 13448

Re: GTV 6 2.5 V6 running problems

Ok power is back, but still has a misfire, stutter or hesitation at constant throttle. I have checked compression which is ok, AFM spring is great fuel pressure is good. Trimming is spot on as we'll as vacuum advance. Only thing is plugs which are new, 1,3,4 and 6 are burning a little black while 2 ...
by Mark Walshaw
Tue Feb 26, 2013 2:00 am
Forum: Fuel, Electrical & ignition (stock Bosch)
Topic: GTV 6 2.5 V6 running problems
Replies: 36
Views: 13448

Re: GTV 6 2.5 V6 running problems

i think i have found the problem, took the dizzy cap and rotor off, and moved the spider ( not sure what it is called) clockwise and anti clockwise a couple of times. Now the power is almost back to normal, but I don't know its exact position and if it's meant to be loose or not. Does anybody have a...
by Mark Walshaw
Tue Feb 26, 2013 1:52 am
Forum: Fuel, Electrical & ignition (stock Bosch)
Topic: GTV 6 2.5 V6 running problems
Replies: 36
Views: 13448

Re: GTV 6 2.5 V6 running problems

Think I found the problem, something is loose in the dizzy. i took the rotor off and the center piece the looks like a spider( don't know what you call it) is loose, I moved it back and forward a couple or times, Don't know it's exact location but when I drive the car power was almost back to normal...
by Mark Walshaw
Tue Feb 26, 2013 1:17 am
Forum: Race Cars and Track preparation
Topic: Pictures,of racing, group 1 etc,etc,
Replies: 63
Views: 29277

Re: Pictures,of racing, group 1 etc,etc,

This is Part 1 of the 2 Hour Endurance race at Kyalami in 1983 which saw the debut of the 3.0 liter GTV. First a big THANK YOU to Kevin you supplied the video and secondly to Steve Allison for converting and up loading the video. Watch this space for the following parts to the race. (Aprox 4 parts) ...
by Mark Walshaw
Tue Feb 26, 2013 12:32 am
Forum: Race Cars and Track preparation
Topic: Pictures,of racing, group 1 etc,etc,
Replies: 63
Views: 29277

Re: Pictures,of racing, group 1 etc,etc,

Nico Bianco leading John Gibb in the Presto Parcels XR 8 at Killarney race way in cape Town 9 Feb 1985.
by Mark Walshaw
Mon Feb 25, 2013 11:10 am
Forum: Fuel, Electrical & ignition (stock Bosch)
Topic: GTV 6 2.5 V6 running problems
Replies: 36
Views: 13448

Re: GTV 6 2.5 V6 running problems

Hi, I am using NGK's B7ES.