John's valvo *Back on the streets!*

[filthyjohn]

Alright, I'm having some bother getting my 340 to run so can somebody show me a pic of the dizzy leads on the cap? I'm pretty sure they're right as I copied off Ben's clio valver when it was in my unit, but I may have made a mistake. The car's behaving as if it has weak spark or incorrect timing, popping through the exhaust and shooting flames out of the carbs, but won't properly bark up.

I'm close to the point of admitting injection would have been easier, but the one thing keeping me going is the thought of the sound of the carbs.

Been keeping these pics under wraps but have a teaser:



Cheers in advance folks.

[WooDooUK]

as if by magic!
Taken from my running williams( Click the picture for death resolution )

Looks like you have them correct.

Looking good BTW , Tbh if i was to start from scratch again i would have gone the carbs route too,

[filthyjohn]

Thanks mate, TBH I'm disappointed that mine are right, I'd have loved an easy fix.
Better rename the topic to reflect the wider help needed.

Ok here's how it goes.
F7P,
valver flywheel,
1.4 crank sensor,
1.4 renix,
'hotwires' coil lead,
clio dizzy cap+arm,
magnecor leads,
brand new NGK plugs,
All earth straps intact and healthy battery/alternator.

It did run for about 10-15sec before, with the help of easy start, but then number 3/4 backfired and set the alternator wiring alight so I had to stop. Now it won't even bark up, though I can get a burst on easy start but not on petrol.

Fuel side:
Twin Dell'orto DHLA40 carbs on homemade manifold. Idle jets 50, air corrector jets 190, floats correct height. No filters yet, facet electric pump. Floats fill up correctly and empty with about 4 pumps of full throttle (~100cc!!!). I'm really sure it's ignition side.
Anyone spotted any glaring errors?

[sven360]

Carbs rock.

Trailer and a trip to Bogg Bros I'd say

Might as well spend your redundancy on summit worthwhile

[filthyjohn]

Carbs rock.

Trailer and a trip to Bogg Bros I'd say

Might as well spend your redundancy on summit worthwhile

The old boy at Bogg's seemed to know what he was doing when he balanced my mate's R1 carbs like, but their roller's aren't very posh:




The carbs do sound fantastic when it's going. I have a 2" unsilenced exhaust and you can't hear it over the induction racket.

[Bazboy]

Engines looking good john, your right about the steel pipe looking pimp

I dunno much about carbs but have you tried the obvious like fuel pump? or am i just being dumb

Dan

[kaos]

i'd say the 1.4 renix is your problem first off, you should be running the reno renix. also reno crank sensor.

then go from there.

[filthyjohn]

I tried a renault renix and it produced even worse results with absolutely no combustion. Plus it has no vacuum advance (since the ECU controls that with values from the lambda sensor and throttle potentiometer).
1.4/1.7/16v Crank sensors are identical except for the wire length.

[kaos]

get yourself on retro renault. thye might have some answers,

have you removed all electronics? just straight crank to dizzy to spark and carbs for fueling?

[filthyjohn]

Yeah, just connected the volvo dial feeds (oil pressure switch, water temp) and sold the clio loom. CPS>renix>dizzy>plugs. I've tried 2 1.4 renix modules and a known good clio 16v one. It *should* be working according to theory.

[340GLT]

Get yourself a 1.7 renix mate, and the flywheel sensor your using will be fine, the 16v flywheel sensor has a different plug anyhow. Is spark your problem? What plugs are you running in it?
Adam

[filthyjohn]

I think spark is the problem yeah. Everything checks out fine with the carbs. Plugs are NGK, whichever the little book in Halfords said I needed. When I took the old ones out they were the exact same ones, just dirtier. I've had a 1.7 CPS on, and it was catching on the flywheel a little, possibly not tightened up enough. It now has a 1.4 one which looks identical.

*edit* It should still at least run and idle on the 1.4 renix though shouldn't it? The maps can't be that different. Or is there a bigger difference?

[340GLT]

If you have a clio renix there plug it in and plug the 1.4 crank sensor into it. See if it runs there. Have you checked to see if the crank sensor is working correctly?
Adam

[filthyjohn]

I've not got a clio renix any more, but when I tried it, it was with the 1.7 CPS. what voltage should I see from the sensor if it's working? Got a spare 1.7 renix lying aroung?

[340GLT]

I dont have a spare renix no, you need the tester on AC voltage and you should see around 0.5v from memory, if you have anything there it should be fine. You havent by any remote chance flooded it causing no combustable spark?
Adam