Search results

Hi Sean, I installed Jenvey Twin Throttle Bodies with Emerald K6 ecu on my 302. Maybe my log will help answer some of your questions, https://www.gt40s.com/threads/installation-of-jenveys-with-emerald-ecu-on-my-302.48476/ Dave

Hi Ricky, yes a wideband O2 sensor in one collector, with closed loop feedback, although for setting up, I change to open loop so that it's not far away from where it should be, then change back to closed loop. I am convinced that the black smoke was fuel pooled in the inlets and fouled plugs...

Update, this morning started the engine, hunting idle speed, masses of black smoke, then neat fuel vapour, finally settling down to a normal tickover! I think this was fuel pooled in the manifold/ engine from the difficulty of getting up the garage gradient the previous day. Set idle to 900 and...

Thanks guys, I will try raising the idle speed and raise the timing values below. The idle maintains really well from cold to hot with cooling fans and cold starting is good without using any throttle. I already increased the idle timing from zero where it was to 20. I think the idea was that...

Update, well that was a full working day, at least I have eliminated a few things. Including yesterday, having balanced vacuum as well as I could, checked fuel system cleanliness, checked for slop in the Jenvey spindles, checked ignition tdc datum, revised tickover advance settings and fuelling...

With you all the way Neil , been wondering how on earth I can reduce the gain. At first I thought the throttle snaps shut very quickly, but it's so much faster than the engine response that it wouldnt be the driver for this. I am currently checking for slop in the spindle connection in the...

Update. I have today balanced the TB vacuum as well as I can 5 4 3 5 4 4 4 4. Increased advance around the tickover speed, set injector map settings so that it idles well open loop, but still the undershoot. A chart from the data log shows the effect clearly, engine rpm dipping to nearly 400rpm...

Thanks Ian, Interesting, although I found that I dont need a road test, just blip the throttle does the trick. At the moment I am finishing of balancing tb flows at idle. Before that I increased the timing advance which had been left at 0 so have increased to 20 with marginal improvement. Just...

Thanks Rick, no IAC valve on this , idle control is just by ignition advance. It worked fine until 2 days ago. I did improve balance side to side yesterday although I am getting half vacuum on inner tb's 6 3 3 6 3 3 6 on cyls 1 to 8, so not sure how to even that up as they are linked pairs, but...

Well so far, I have opened up the LP and HP filters, which were fine, changed the paper one anyway. All fuel clean and no signs of contamination or debris. Visually checked a couple of injectors both fine. One thing though, the fuel pressure was showing 2.5bar which is 0.5 bar down from normal...

Hi James, I will be there Sat/Sun. With my DAX if I can fix the stalling issue that just developed, more mundane transport otherwise but I will be there. Dave

Tablet problems, so I'm on the pc now. I see my message is truncated, so missed out the fact that it's Jenvey TB's and an Emerald K6 ecu. Recently I replaced alternator so the battery voltage is up 1 to 1.5 volts. Changing down when coming to a stop, when I dip the clutch engine speed...

Hi Bob, it's throttle bodies, but I guess it still translates to lack of fuel. Have a look at the other thread, Dave

Changing down when coming to a stop, when I dip the clutch engine speed undershoots and sometimes it stops. Tickover and starting is fine and if I slow right down to <1000rpm before dipping clutch it drops to tickover as normal. I opened the throttle stops to give it more air but still the same...

Sorry, tablet prob, see other thread same title.

mmm more food for thought!

JP. Nice looking competition Capri! I will bear your comments on the Carter pump in mind too. I took the car for a couple of runs, it seems to be ok for what short acceleration runs are possible. On public roads Facet pumps will be ok and it is only under competition conditions as you have...

Thanks JP, Interesting experiences, I suppose that I could put the two pumps in parallel, but I would then have to return to both tanks simultaneously. However, I will look at the Carter option too. Capri 3.0 and Escort 2.0 on Webers, don't they sound great!:)

Thanks JP, I see that you are exactly right. I did know already but didn't have the alternative you have now supplied. I suppose that on the road it won't be a problem, as throttle is never sustained for long. I will need to put this right in the future though. thanks Dave

New Facet Red tops installed. I also put an orifice in the return to the diverter valve to get a small back pressure in the surge pot. Hole is about 1/16" and gives a back pressure of 1.5psi but only with hp pump / engine running. Havent quite understood that yet. Before the orifice I tried...