1970 DAF 33 ignition problems

howard
Bigger Belter

Posts: 179

1970 DAF 33 ignition problems Jan 23, 2015 11:59:54 GMT

Quote

Post by howard on Jan 23, 2015 11:59:54 GMT

Hi there,

Wonder if anyone can help - Sue's 1970 DAF Celia has an odd issue which is that it will start but the spark will gradully fade out. When left for a while it will start again. It's a 6 volt system - points changed, condenser changed, coil changed - timing set up.

Any clues gratefully received!

Many thanks!

Howard (and Sue - and indeed, Celia!)

thebear54 DAF Nut Those who say it can't be done, should not interupt the people doing it ! Posts: 1,426	1970 DAF 33 ignition problems Jan 23, 2015 13:29:48 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by thebear54 on Jan 23, 2015 13:29:48 GMT How old are the dizzy cables Howard? Also check for cracks in the Dizzy cap. John
	I suffer from CDPD- Compulsive DAF Purchasing Disorder, there is no cure! "Jobsworth Little Hitler"-At the DAF Club of America

howard Bigger Belter Posts: 179	1970 DAF 33 ignition problems Jan 23, 2015 13:32:19 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by howard on Jan 23, 2015 13:32:19 GMT Both the cap and the leads are about a year old. Doesn't mean they can't break down or become faulty though!

macplaxton
Technical Advisor

Posts: 1,373

1970 DAF 33 ignition problems Jan 23, 2015 17:56:29 GMT thebear54 likes this

Quote

Post by macplaxton on Jan 23, 2015 17:56:29 GMT

Doesn't exclude any of the new stuff being faulty either.

Also check low tension leads to coil - I once had a Kawasaki that would start no bother, but after running a short while it would die. Changed both coils and it was the same. Wiggled the leads that connected onto the coil and it would misfire. Sorted by crimping fresh spade terminals onto slightly cut-back wires onto fresh copper. Conclusion was the connection was good until the heat rose from the engine (the coils being on the frame above it) was causing the connection to break down. Weird.

Check all the way back to the ignition switch and beyond back to the battery.

Being a 6 volt, make sure all connectors and earths are super-mega clean.

1972 DAF 44 Estate. Just the one DAF, honest.

Tuning Data
Model	Plugs gap	Points gap	Timing	In. valve	Ex. valve	Idle
33-> Jul'71	0.8mm	0.5mm	6 BTDC	0.1mm	0.15mm	725
33 Jul'71->	0.8mm	0.5mm	5 ATDC	0.1mm	0.15mm	900
44-> Jul'71	0.8mm	0.5mm	6 BTDC	0.1mm	0.15mm	725
44 Jul'71->	0.8mm	0.5mm	5 ATDC	0.1mm	0.15mm	900
55	0.6mm	0.5mm	TDC	0.15mm	0.20mm	700
55 Marathon	0.7mm	0.5mm	TDC	0.15mm	0.20mm	700
66 all 1108cc	0.7mm	0.5mm	TDC	0.15mm	0.20mm	725
66 1289cc	0.7mm	0.5mm	6 BTDC	0.15mm	0.20mm	725

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1970 DAF 33 ignition problems

Post by howard on Jan 23, 2015 11:59:54 GMT

Post by thebear54 on Jan 23, 2015 13:29:48 GMT

Post by howard on Jan 23, 2015 13:32:19 GMT

Post by macplaxton on Jan 23, 2015 17:56:29 GMT