I am having a problem with low idle on my 4jh5e
YANMAR. The
engine starts up fine and runs fine. I keep it at 800rpm for idle. Again it runs fine When it gets up to proper temp and I run normally between 1800 and 2000
rpm but when I bring it back down to a low idle it cuts off. It will level off at about 800rpm and then just dies. It will start right back up again and then do the same when I bring it back down to low idle. I have tried everything I can think of cleaned injectors, new
racor filters, new
fuel lines, new
water separator filter, new
electric fuel pump, I replaced the entire
fuel injection unit new which was very expensive on advise of a
mechanic, checked for blockages, cleaned the mixing
elbow thinking maybe a back pressure problem. All have not corrected the problem. I have 1500 hrs on the
engine. Would appreciate any insight or has anyone else had this problem. Thanks