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Originally Posted by ngoma
One injector had a bad spray pattern? The rest were OK? Correct POP? What about drips or moisture when held 10 sec. at just under POP?
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Yes they all pop at the right pressure and only one of them slightly dripped when held at close-to-pop-pressure. Two new injectors are on their way already since they are under warranty, although admittedly I lost a bit of confidence in the seller.
Quote:
Originally Posted by ngoma
There are many schools of thought for piston/ring/cylinder break-in, some even adding sink scouring powder to hasten ring seat. I like the "Run it hard out of the gate, under load, varying RPMs, up and down through the RPM range, quick accelerations and decelerations."
http://www.mototuneusa.com/break_in_secrets.htm |
Great, thanks for the link. I take it from both you and @v8volvo that the oil I'm using should not matter? I can still drain it and replace it with mineral oil, but also not if it won't make a difference.
Quote:
Originally Posted by ngoma
One of the best methods to determine if air-intrusion is the problem is to temporarily install a low-pressure fuel pump just upstream of the main filter. Run it that way and see if the problem disappears.
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Noted, thank you (once again) for the tip.
Quote:
Originally Posted by ngoma
Lastly: Air intrusion itself can cause hard starting. If bad enough (usually bad IP mainshaft seal paired with clogged fuel filter), it can cause problems at idle and off-idle.
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Does this mean that air intrusion alone would not have an impact on idle performance? I currently see quite a lot of air bubbles being sucked in and idle is very rough (the engine jumps around and struggles to keep up when idling). I thought the bubbles would explain it, but are you saying there must be more to it?