B230FD Cranks but won’t start

[Volvo940GL]

Originally Posted by Laird Scooby

It's possible it's the ignition amplifier module but it doesn't fit the usual failure pattern. For the cost of one, it could still be worth throwing a new one at it.

If a new one is fitted, clean the heatsink it bolts onto with a solvent cleaner such as brake cleaner, isoprpyl alcohol, methylated spirits (denatured alcohol) or similar - NEVER use an abrasive on it!

Then smear some heatsink compound on the back of the new module to give a thin but even coatinf, as you mate the module to the heatsink, give it a wiggle to help spread the compound further.

https://www.ebay.co.uk/itm/Servisol-...e/362527726443


In case it doesn't translate readily to Norwegian ^^^^^ Massage the tube before the first use and then each time after if it's not been used for a while.

I have a new module but still no start

[Volvo940GL]

Originally Posted by Laird Scooby

It's possible it's the ignition amplifier module but it doesn't fit the usual failure pattern. For the cost of one, it could still be worth throwing a new one at it.

If a new one is fitted, clean the heatsink it bolts onto with a solvent cleaner such as brake cleaner, isoprpyl alcohol, methylated spirits (denatured alcohol) or similar - NEVER use an abrasive on it!

Then smear some heatsink compound on the back of the new module to give a thin but even coatinf, as you mate the module to the heatsink, give it a wiggle to help spread the compound further.

https://www.ebay.co.uk/itm/Servisol-...e/362527726443


In case it doesn't translate readily to Norwegian ^^^^^ Massage the tube before the first use and then each time after if it's not been used for a while.

Thanks for for support but I have new module aswell and it won’t start

[37 RUBY]

What colour were the plugs when it first stopped.

[Laird Scooby]

Originally Posted by Volvo940GL

Thanks for for support but I have new module aswell and it won’t start

Did you get a NOID light at the same time?

Also did you remove and clean/dry the plugs before trying it?

[Volvo940GL]

Originally Posted by 37 RUBY

What colour were the plugs when it first stopped.

When it first stopped it didn’t have spark

[37 RUBY]

Yes but what colour were the tips

White = lean fuel mixture

Brown = good fuel mixture

Black = too rich fuel mixture.

A good indicator as to what happened before fault.

[Volvo940GL]

Originally Posted by 37 RUBY

Yes but what colour were the tips

White = lean fuel mixture

Brown = good fuel mixture

Black = too rich fuel mixture.

A good indicator as to what happened before fault.

Brown color

[37 RUBY]

Originally Posted by Volvo940GL

Brown color

So it was running good before the breakdown.

Originally Posted by Volvo940GL

I have changed Rotor, distributor, cables. Plugs. Module for spark. And new crank position sensor. Also have new fuel pump and filter.

You have changed lots of parts. Are they all new or are any salvage parts?

Originally Posted by Volvo940GL

When I crank the engine it sounds like it’s ignites. It’s sort of a strange blow sound and disappear.

You can get it to backfire.
To me that sounds like timing.
Laird Scooby suggests it is overfuelling

Originally Posted by 37 RUBY

Have you tried a timing strobe on as you crank to confirm the spark is happening when it is supposed to?

Originally Posted by Volvo940GL

I’ll check tomorrow

Have you tried this yet?

How about you ensure NO fuel can get to the inlet and pouring small amounts into each cylinder then try to fire it up.

[Laird Scooby]

Originally Posted by 37 RUBY

So it was running good before the breakdown.

You have changed lots of parts. Are they all new or are any salvage parts?

You can get it to backfire.
To me that sounds like timing.
Laird Scooby suggests it is overfuelling

Have you tried this yet?

How about you ensure NO fuel can get to the inlet and pouring small amounts into each cylinder then try to fire it up.

I'm also open to the idea it's not fueling at all, if it has a cold start injector, that may be causing the partial fire-up but not enough to keep it running without the injectors opening.

Question is, is it actually back-firing or spitting back? Spitting back will be in the inlet manifold whereas a backfire will be in the exhaust.

Spitting back suggests lean or almost no fuel, sometimes accompanied by apparent lethargy from the starter as if the timing is overadvanced.

Almost impossible to pour a small amount of fuel into each cylinder as the engine leans 20 degrees to the right where the plug holes are.

I would suggest this method - "Starting a flooded engine" :

Depress the accelerator all the way to the floor. Turn the ignition key from position 0 to position 3 (start) without pausing.

Allow the engine to crank for about 8-10 seconds. Release the key but DO NOT turn back to positoin 1 or 0, leave it at position 2. Wait 8-10 seconds then turn the key to position 3 again.

When the engine fires, slowly release the accelerator pedal to allow a smooth, fast idle.

I asked much earlier in the thread if you had recently filled up with petrol but i think you missed the question.

[Volvo940GL]

Originally Posted by 37 RUBY

So it was running good before the breakdown.




You have changed lots of parts. Are they all new or are any salvage parts?



You can get it to backfire.
To me that sounds like timing.
Laird Scooby suggests it is overfuelling





Have you tried this yet?

How about you ensure NO fuel can get to the inlet and pouring small amounts into each cylinder then try to fire it up.

It’s new parts I use. I have actually tried that. With cranking without fuel and crank with fuel again. It backfires sometimes. And sometimes it spits in the manifold