Bj73 3b cranking won't start (2 Viewers)

[Newzealandbj]

Hi Guys I am reaching here as I'm a bit lost.

I have a 1986 3b-II BJ73 255,000ks

Just have problems with it cranking and won't start, need to put a little brake cleaner in the intake just to get it to fire, which is far from ideal

Just replaced glow computer, 15second glow, glow plugs all good, new primer and just replaced seals on diesel injection pump as was leaking diesel when cold

First thing in the morning it will just crank and crank and won't fire. Once started and warm it runs like a dream until the next morning when it is cold..

I'm so stumped

 

[Squash]

Either fuel is leaking down overnight or you don't have good glow.
Check your primer in the morning, an airtight system will have almost immediate pressure, a leaky system will require some priming.
As for the glow system, you could try unplugging the temp sensor for the glow system. My 3b would easily start to -20C.

 

[Eurasiaoverland]

Have you checked that you're getting voltage at the plugs?

Running a clear fuel hoae from filter to pump will let you see if fuel is draining overnight.

If it's a 1986 engine it won't be a 3Bii, not that it makes any difference to the issue.

 

[CRZR45]

Make sure you replace or have new fuel lines. Mine had a pin hole leak on the return line at the back of the head and would loose pressure overnight. If your primer pump has to be pumped then you have air getting into the system. My2c good luck

 

[Tanner H]

Going to piggyback onto this topic as I'm running into the same issues and want to follow the outcome.

Question: will the hand pump start to get firm once pressure is achieved? the hand pump on my 13b-t has no change in firmness after about 30 or pumps.

My old 1hdt's primer got very firm once pressure was good, so im assuming i have some air in my current 13bt setup.