1983 Datsun/Nissan k-CAB missing badly through the range!

CPLHICKS

MEMBER
1983 NISSAN

My Datsun pick-up(Which has an L18 Engine) started missing and slowly got worse until I could hardly drive it. So I've changed the fuel filter, put on a new out the box distributor unit(I've checked and set all clearances on points and checked the advance and retard etc.), Put on new set of spark plug cables, put on a new ingnition coil, put in a new nikki carburetor kit, checked the idol shut off solanoid, checked the fuel pump, new spark plugs, put on new manifold gaskets, put on new vacum pipes, checked valve clearances, checked for wear on the timing chain. We have no emission control here in South Africa so it's not that.
I have checked and tripple checked all of these and STILL it misses from idle and wright through the range!
PLEASE HELP ME !

Bruce, Henley-On-Klip, South Africa. :

2 Replies

RASMATAZ

MECHANIC
75,992 POSTS

If its a contact point distributor ignition.

To adjust the contact point properly you need a dwell meter after you gapped it while on the high side of the distributor camlobe, now adjust the dwell using the contact point adjusting screw while the engine is cranking over. You need to check the book I forgot the dwell angles for 4cyl. Its been a long long time since Ive adjusted one-its probably back in 1971.

Good Luck

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Monday, April 16th, 2007 AT 7:26 AM

CPLHICKS

MEMBER
2 POSTS

I checked the dwell angle with a dwell meter as You suggested but found it to be spot on, (it should be between 49 degrees - 55 degrees) Mine being 52 degrees. So while I stood there starring at the distributor with the cap off I noticed the wire to the points had not been installed correctly. The new distributor came out the box fully assembled, points and all, and I took for granted that the manufacturer knew what they were doing and I installed just setting the points. But no.
Anyway I've corrected it and everything is perfect. I guess some of the spark was jumping to the body of the distributor making it miss each time it did.
I didn't think the new one would have a problem that would make it miss simular to the old worn out one. I wish I'd found this earlier before I replaced half the pick-up.

Thanks problem Solved! :Lol:

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Tuesday, April 17th, 2007 AT 3:13 PM