3b no spark

[thecrim22]

Yeah even more so now to get it off

[sidrick]

When I went to change the rotor arm on my 3B I couldn't get it off. If I pulled any harder then something would have broken. Is there a trick? Any other rotor arm I've changed has just pulled off.

Fortunately mine was in good condition so I cleaned it and kept it in place.

[thecrim22]

I had to split it with a hammer and a long chisel. Luckly its -3 here so split no prob. Then i took the rest off with a screwdriver

[twoqu]

The original rotor is glued on!
That does not look like the correct rotor either as it should be @11mm at the tip. Perhaps some one has been in there before and changed the whole dizzy for a 7A or something. Was the tamperproof cap still over the dizzy fixing?

Looked more closely at it and I believe it is an original correct one! The clue is that the contact does not stick out from the plastic support. If your replacement is wider, some have trimmed off the excess. You should be able to tell where by comparing them!

[thecrim22]

Part number on it is 123 433 2414

[twoqu]

Part number on it is 123 433 2414

Yep thats correct!
Finding the same size as a replacement is the tricky bit!

[thecrim22]

Lol yeah i read a few posts on here about it

[thecrim22]

Well fitted new rotor arm and g28 sensor kept it turning over for bout a minute and she fired up sweet as a but had it running for about a minute gave a couple of revs then died went to fire it back up weeeeeeeeeeeee **** no compression took to bits and some **** hasn't tightened the crank pully bolt so the woodruff key is shot and the groove in the pully is shot. Crank looks to be OK so I need a new pully and fingers crossed it hasn't bent a valve but I'm never that lucky so I'll prob find all 20 ar done

[Error404]

Oh dear
IME if you have piston to valve contact it normally makes a fairly audible bang, so you might be lucky and the timing has slipped enough for the engine to die before anything made contact. You need a new crank sprocket (I recommend a billet one from Terrybullwon or VolcanoRS on the forum). Timing belt is an easy job on these, make sure you change the idler pulley and crank bolt too, worth chucking a new water pump in while you're at it. Fingers crossed you've not bent anything.

[thecrim22]

Yeah already ordered belt kit and punp from my parts supplier just need to sort out pully and key

[Error404]

the billet sprocket will come with the key

[thecrim22]

Groovy

[thecrim22]

Well finaly got the new belt on after my supplier sent the wrong water pump and hey presto she fired up straight away sweet as a nut

[Error404]

Good news

[thecrim22]

Aye runnin sweet so im lucky with the valves. Looks like it had only slipped 2 maybe 3 teeth