Discussion
hi all, i have just re-built a 96 4.0l chimaera engine (badly 
ed cam) and after puting all the bits together i've got no spark and no voltage at the coil. i've put a new coil on and the fuel pump primes, i get dash lights and it turns over but still no spark. the fuses are good and the earth is good. i've double checked all the conections and fully charged the battery. open to sugestions?
thanks in advance for a well pissed off, stevo.
p.s given that this is the same engine i have rebuilt in my dads p6 elan turbos are way easyer to fix.
ed cam) and after puting all the bits together i've got no spark and no voltage at the coil. i've put a new coil on and the fuel pump primes, i get dash lights and it turns over but still no spark. the fuses are good and the earth is good. i've double checked all the conections and fully charged the battery. open to sugestions? thanks in advance for a well pissed off, stevo.
p.s given that this is the same engine i have rebuilt in my dads p6 elan turbos are way easyer to fix.
At the risk of stating the obvious, is the rotor arm present and installed properly...ie fully home. Are the RA contacts ok (sorry)? Is there HT available on the king lead into the distributor (try arcing it to earth)? Check for integrity of the king lead (has it rubbed on anything so that it is leaking to earth along its lenght somewhere... maybe try cranking the car in the dark to look for stray sparks)? As the coil is new, I'm assuming the primary and secondary resistances check out (worth switching back to the old one as a reality check)? Is the ignition module connected properly (polarity not reversed)? Worth checking the output from this as the engine is turned... measured voltage should switch (does the job of traditional points). I'm not sure what the 'trigger' mech is as I've never delved in that far, but might be worth checking any sensor or 'chopper' is present (or gapped properly) if these were disturbed when the cam was replaced? Is the distributor properly home and turning with the engine?
Good luck
Good luck
If there's no voltage at the coil (I assume you mean no 12v across the LT terminals with ignition on) then surely the problem must be in the loom to the coil? Possibly the ignition amplifier is failing, shorting the coil terminal(s) to ground, but I doubt it. I'd start by doing continuity tests to the LT coil wiring.
You have got the terminals on the coil the right way round have you? sorry if i am telling you to suck eggs but there is a black wire which is the ign live to the coil, a lot of people think this is a ground?
black? positive? joking? i think i've got that going to the - on the alternator. D'OH!
black? positive? joking? i think i've got that going to the - on the alternator. D'OH!
chassis 33 said:
...but arent the electrical terminals inverted male/female on the coil so you can't get them inverted?
And don't knock TVR, the coil and loom is lifted straight from a Landie!!!
Regards
Iain
And don't knock TVR, the coil and loom is lifted straight from a Landie!!!
Regards
Iain
Edited by chassis 33 on Friday 14th July 15:10
I think reading between the lines he had connected the black (which is coil live on serp engines!!) to the tacho output on the alternator and vice versa, they are both close together and the same terminals so easily done
[/quote]
I think reading between the lines he had connected the black (which is coil live on serp engines!!) to the tacho output on the alternator and vice versa, they are both close together and the same terminals so easily done[/quote]
that was it exactly. it comes off the loom at the same place as the lt wires. 4 whites/wh grey and one black, with two of the whites male and two female i put them all on the coil and the spare black on the alternator negitive terminal. but as we know hand build britsh sport car dont work like that.
v8racing i owe you a pint, stevo.
I think reading between the lines he had connected the black (which is coil live on serp engines!!) to the tacho output on the alternator and vice versa, they are both close together and the same terminals so easily done[/quote]
that was it exactly. it comes off the loom at the same place as the lt wires. 4 whites/wh grey and one black, with two of the whites male and two female i put them all on the coil and the spare black on the alternator negitive terminal. but as we know hand build britsh sport car dont work like that.
v8racing i owe you a pint, stevo.
Edited by stevo.elan on Friday 14th July 19:44
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