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Old 01 September 2016, 04:37   #11
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Fantastic info I will try all these things and be sure to let you know how I get on
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Old 02 September 2016, 16:09   #12
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Just to give you a updated... So far Iv checked all hoses for turbo... And intercooler not splits or leaks. Give the intercooler a good clean. Lift pump working and in good condition. Now looking closely at turbo gauge only showing 4 psi, whistling nicely plenty of pressure. So I think it's a faulty gauge. Trying another one tomorrow. I'm fairly confident the turbo is working normal. So would i be correct if the the pump would be the culprit.
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Old 02 September 2016, 16:52   #13
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Once you have determined you actually have reasonable boost pressure then assuming it's not smoky then as yam man says look at boost compensator which is designed to alter the fuel/ air ratio
More boost should equal more fuel delivered so if it's not smoky on load then a good bet it's not getting enough fuel
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Old 03 September 2016, 03:21   #14
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There isn't a boost compensator fitted to this engine, if you have little or no boost, it will black smoke and be sluggish.
The factory boost is 0.5bar around 7psi, you can run a bit more boost by opening up the screw on top of the pump.

80deg C is about the right temperature, they do run too cold really.
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Old 03 September 2016, 04:20   #15
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If no boost compensator or waste gate then there is no way to vary the boost pressure by messing with the pump.
I'd imagine there is a diaphragm on top of the pump which alters the fueling to match the boost pressure I guess this is what yam man is referring to
I agree if there is no black smoke and you have determined you have correct manifold pressure then there isn't enough fuel going in if it's down on rpm
If the engine is overloaded causing the lack of rpm then it should black smoke
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Old 03 September 2016, 07:58   #16
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Right ok guys.... There is no black smoke under load... And Iv been told by mermaid that I should have at least 1 bar of pressure 15-18psi. Im beginning to think the pump might need adjusting to the correct setting as it does look like it's been played with at some point.
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Old 03 September 2016, 17:22   #17
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Probably a good idea to confirm manifold pressure before starting to alter pump settings
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Old 04 September 2016, 10:37   #18
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Quote:
Originally Posted by beamishken View Post
Probably a good idea to confirm manifold pressure before starting to alter pump settings
Glad you mentioned that... As I was going to mention that the turbo is defiantly boosting fine, Iv been tried different gauges all the same results.... By the time it reaches the manifold down in psi quite a lot, now I know the engine uses some of that. Which I want to now know is how much psi is on the manifold and how much boost is showing on there boost gauge. Still waiting on my new boost gauge to arrive.

Any advice anyone
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Old 04 September 2016, 11:07   #19
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If the spec says 1 bar then that's what you should see at the manifold under heavy load
I'd be fitting a Capillary guage direct into the manifold somewhere to confirm there is usually some form of blank or maybe a take off that you can either screw into or tee into
Check out this no on Ebay worth a fiver to confirm
130957652507
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Old 04 September 2016, 12:35   #20
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Quote:
Originally Posted by beamishken View Post
If the spec says 1 bar then that's what you should see at the manifold under heavy load
I'd be fitting a Capillary guage direct into the manifold somewhere to confirm there is usually some form of blank or maybe a take off that you can either screw into or tee into
Check out this no on Ebay worth a fiver to confirm
130957652507
Brilliant buddy thanks for info, yes we have tried that today, a pressure gauge directly onto the manifold but they weren't the best gauges as the where air compressors and went to 100psi as they where to hard to read the psi on the gauge as it was quite small, but when we fitted and gave it full throttle it seemed like the gauge would create some some sort of vacuume rather than boost. Not sure what's going on as we are going to fit a new 1 this week. To confirm this.
Not sure what was going on 🙈
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