Not starting...fuel issue?

[amaurer]

Well, its official, Tom is correct, 8.5V plugs are the proper ones.

To recap, I had 10.5V plugs in my cruiser and had a glow controller that would glow only weakly (2 coils) after 35 seconds or more.

I just replaced them with 8.5V plugs (marked with the part # the EPC) from Roodogs. After only 15 seconds of glow-age, I see this:

 

[lostmarbles]

Well, its official, Tom is correct, 8.5V plugs are the proper ones.

To recap, I had 10.5V plugs in my cruiser and had a glow controller that would glow only weakly (2 coils) after 35 seconds or more.

I just replaced them with 8.5V plugs (marked with the part # the EPC) from Roodogs. After only 15 seconds of glow-age, I see this:

Whooopeeee! Good news Drew. (But I can't really take the credit because I know you've always been suspicious of the 10.5V plugs anyway. And you already knew that Joe's been running 8.5V plugs in his very similar BJ42. ----- Talking of Joe, I wonder why his controller doesn't glow as well as yours does now though )

 

[Tapage]

so the 10.5 plugs are for .. super glow system ?

 

[lostmarbles]

so the 10.5 plugs are for .. super glow system ?

I don't think so (but I have not had any involvement with any vehicle that was designed to use those plugs so I don't really know for sure).

From what I gather :

• 19850-68030 is an 8.5V plug (never mind what the EPC says to the contrary) and it is used in a B engine in a 12 volt BJ40; a 3B engine in a 12 volt BJ42; and a 2H engine in a 12 volt HJ47 ---- PROVIDED THEY ALL EMPLOY MANUAL GLOW SYSTEMS
• 19850-68050 is a 6V plug that is used in a 3B engine in a 12 volt BJ42 and in a 2H engine in a 12 volt HJ47 ---- PROVIDED THEY ALL EMPLOY SUPERGLOW SYSTEMS.

I don't think a 10.5V plug should be used in any BJ40, BJ42 or HJ47 but I know they are used in a 3B engine when it is fitted to a 12 volt BJ60 and in a 2H engine when it is fitted to a 12 volt HJ60.

Because of the high voltage rating (10.5V), I doubt it would be used with "superglow". But since I have enough trouble getting to grips with the technicalities associated with BJ40s and BJ42s (that I am most familiar with) - I don't want to overload my brain by researching information on BJ60s and HJ60s and whatever else is meant to use 10.5V plugs.

No doubt there are others out there with the information at their fingertips who can chime in.

 

[Joe Egolf]

I don't know either .Mine still does not glow and I have sorta given up on the hunt for why, for the time being . I have achieved No oil leaks though.And my cruiser starts fine with the new glow plugs but no better than with the old ones I do not believe??

 

[amaurer]

I have achieved No oil leaks though.

OH you just had to raise the bar, eh??

 

[Tapage]

I don't think so (but I have not had any involvement with any vehicle that was designed to use those plugs so I don't really know for sure).

From what I gather :

• 19850-68030 is an 8.5V plug (never mind what the EPC says to the contrary) and it is used in a B engine in a 12 volt BJ40; a 3B engine in a 12 volt BJ42; and a 2H engine in a 12 volt HJ47 ---- PROVIDED THEY ALL EMPLOY MANUAL GLOW SYSTEMS
• 19850-68050 is a 6V plug that is used in a 3B engine in a 12 volt BJ42 and in a 2H engine in a 12 volt HJ47 ---- PROVIDED THEY ALL EMPLOY SUPERGLOW SYSTEMS.

I don't think a 10.5V plug should be used in any BJ40, BJ42 or HJ47 but I know they are used in a 3B engine when it is fitted to a 12 volt BJ60 and in a 2H engine when it is fitted to a 12 volt HJ60.

Because of the high voltage rating (10.5V), I doubt it would be used with "superglow". But since I have enough trouble getting to grips with the technicalities associated with BJ40s and BJ42s (that I am most familiar with) - I don't want to overload my brain by researching information on BJ60s and HJ60s and whatever else is meant to use 10.5V plugs.

No doubt there are others out there with the information at their fingertips who can chime in.

Thanks .. interesting info at all .

 

[lostmarbles]

Hi Greg

Well as those involved already know - we got absolutely nowhere here in solving your plug-blowing problems despite the marathon-length of this thread.

And I still think of your situation from time to time. (Particularly now while I'm running tests on my own glow system and consequently believe I'm developing a better understanding of it's operating statistics.)

Do you have any update relating to your "plug blowing problem"?

One post I read recently from someone who had blown the tips off their glow plugs (as you have) - had fitted glow plugs designed for a 12V cruiser to their 24V cruiser. (But I felt sure we had confirmed that your HJ47 was a stock 12V Australian model and not a 24V model.) Edit - Ooops. That post is in a thread you started so you must already be aware of this

 

[bagh33ra]

PS. I've tried to go back in my posts and "edit-in comments" to enable future readers to more readily make sense of this thread (and hopefully avoid their "drawing the wrong conclusions from parts of it"). The alternative would have been to delete the many bits where my "diagnosii" were on the wrong track - but I believe it is better for people to see "errors being made".

But unfortunately, people who draw conclusions (such as what plugs they should be running) by reading only parts of this thread (without reading the whole thing) are still likely to get misguided.

By the way, massive thanks for that habit of yours to edit revisions into your posts - very handy. Though I'll admit it just helps me skip past the dead ends by looking for the orange print.

Anyway, bumping this thread because I recalled seeing it a while back and needed to find the definitive answer to the 8.5 vs 10.5 in an '82 BJ-42 from NZ question.

Now to scroll back through for that part number ...