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Old 03-13-2017, 07:42 PM   #1
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Bleeding Perkins 6.354

Just the other day the engine surged and quit . So I decided to change all filters . I've bleed the system before and it was no big deal , but having trouble this time . I get good fuel out of my injection pump with no air when using my manual pump , but I can't get any fuel up to the secondary filter . I notice when I'm pumping I get air bubbles in the first racor . What am I doing wrong . I've been pumping like crazy but no fuel to the secondary.
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Old 03-13-2017, 07:49 PM   #2
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Are you using the manual pump on the engine block ? If so make sure your off the cam and getting full stroke on the pump
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Old 03-13-2017, 08:00 PM   #3
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You could also try using cheap engine degreaser sprayed down the inlet-manifold .This will force the engine to start and with very small amounts sprayed you can keep the engine running till it self primes .

Warning keep a rag close by in-case you get a runaway


These Perkins are tractor engines and need to trained to obey and not fussed over like a Swiss watch
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Old 03-13-2017, 08:27 PM   #4
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In fig. N.11 the book is calling this a fuelled starting aid needs bleeding . I'm not sure where this located unless it's the one on the side of the filter housing . I've loosenthe banjo fitting at top of filter . I'm getting some air out here but no fuel . Is there anything to that racor bubbling when I pump ?
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Old 03-13-2017, 08:33 PM   #5
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Marty you said just the other day the engine surged and quit.What makes you think it was clogged filters ?
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Old 03-13-2017, 08:36 PM   #6
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It's been along time since changed but to honest they were not that bad .
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Old 03-13-2017, 08:40 PM   #7
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It's been along time since changed but to honest they were not that bad .


I thought you were going to say that


Let me have another think
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Old 03-13-2017, 08:46 PM   #8
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OK, sorry to ask, but there is fuel in the tank?
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Old 03-13-2017, 09:08 PM   #9
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OK, sorry to ask, but there is fuel in the tank?
No problem . I stuck the tank and it has plenty fuel . The bubbles in the racor when I pump the priming lever are bugging me .
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Old 03-13-2017, 09:10 PM   #10
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Im starting to think its fuel pump related ??? These pumps will pump fuel but wont have any pressure .
Can you get your hands on a 12v pump and repeat the process as a first step to eliminate possible problem you had to start with before you changed the filters ??
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Old 03-13-2017, 09:11 PM   #11
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The fuel from the priming pump does go to the injection pump before it goes to filter right ? There is no fuel in the line going to the secondary filter .
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Old 03-13-2017, 09:24 PM   #12
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The fuel from the priming pump does go to the injection pump before it goes to filter right ? There is no fuel in the line going to the secondary filter .


Is this a single or twin filter set up ?
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Old 03-13-2017, 09:29 PM   #13
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https://www.smokstak.com/forum/showthread.php?t=101196
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Old 03-13-2017, 09:32 PM   #14
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Im starting to think its fuel pump related ??? These pumps will pump fuel but wont have any pressure .
Can you get your hands on a 12v pump and repeat the process as a first step to eliminate possible problem you had to start with before you changed the filters ??
Check this out . I just remembered I had a spare in the basement from PO . I know that it is not mounted but man it is a lot harder to pump than the one that's on the engine .
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Old 03-13-2017, 09:35 PM   #15
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Is this a single or twin filter set up ?
Single
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Old 03-13-2017, 09:35 PM   #16
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Fingers crossed
Make sure the cam that operates the pump in on the low side when you fit it
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Old 03-13-2017, 09:41 PM   #17
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Fingers crossed
Make sure the cam that operates the pump in on the low side when you fit it
I was gonna ask if I can screw up something mounting it . How can I tell the cam is in right position? Should I be able to bolt it up without any resistance on the arm that rides the cam ?
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Old 03-13-2017, 09:49 PM   #18
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Before you replace the fuel pump turn the engine 180 degrees and see if the pump feels any different you may be riding the to of the cam at present which makes it hard and not pumping fuel
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Old 03-13-2017, 09:59 PM   #19
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Check this out . I just remembered I had a spare in the basement from PO . I know that it is not mounted but man it is a lot harder to pump than the one that's on the engine .
It`s possible the "spare" was removed because of a defect, check it before you go with it or you might compound the problem.
I`ve heard a diesel will also run on WD40. Might be kinder to the engine than degreaser?
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Old 03-13-2017, 09:59 PM   #20
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Before you replace the fuel pump turn the engine 180 degrees and see if the pump feels any different you may be riding the to of the cam at present which makes it hard and not pumping fuel
There doesn't seem to have resistance within the full length of stroke , only a short part of the stroke .
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