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injection clatter vs lifters clatter?
by
carrizog60
on 23 Aug, 2010 02:37
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hi
is there a way to identify is the clatter of an engine is produced by injection or lifters?
the thing is that i install a 1Y engine on my passat that was sitting for 2 and a half years.
put a gt2052v and a 1.6gtd pump,using the cleaned and pressure tested 1.9 dual stage injectors that were stock on the passat.
timed the pump before install and set it to 1.00mm.
now the car starts fine but the engine is somewhat loud,almost reminding me the previous 1.6 solid lifters that i had...
shouldnt be the 1.9 quieter?
i heard clatter but what is the source?
isnt 1.00mm a good place for a 1.6 pump on 1.9 injectors and engine?
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#1
by
honda_is_the_best
on 23 Aug, 2010 11:57
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pretty sure the single stage pump and dual stage injectors dont work together like they were designed to. the AAZ has a secondary injection pump on the camplate, for the 2 stage injectors.
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#2
by
wolf_walker
on 23 Aug, 2010 15:53
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The times I have heard loud hyd lifters, they have been a markedly different noise from injection rattle, and also only when cold at low RPM. A very regular tapping. Injection noise is *usually* slightly more random and will come and go with temp/load. Temp will affect the hyd lifters some, but not so much.
They seem to have a relatively short "quiet" lefe span, but they are cheap at least.
I too suspect the timing is off with dual stage injectors however.
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#3
by
honda_is_the_best
on 24 Aug, 2010 10:07
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lifters to me sound like a tic tic tic...
injectors sound more like a clunk, because there is so much more metal to deaden the sound..
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#4
by
Smokey Eddy
on 24 Aug, 2010 12:52
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Get out your screw driver. Shove the handle into your ear and stick it on the injectors 1 at a time.
A knocking injector will be a loud CLACK CLACK CLACK CLACK in your ear.
lifters are a ticking sound like honda_is_the_best says.
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#5
by
carrizog60
on 25 Aug, 2010 13:37
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injectors were cleaned and were like new acording to the shop.
so,what should be the timing for this setup?
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#6
by
wolf_walker
on 25 Aug, 2010 15:23
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If the injector's breaking pressure don't match what the pump was built for, there is no "correct" timing for it.
The base timing is an unknown and the dynamic timing, rate of advance and such, is also unknown if the injectors aren't what the pump was calibrated for. My understanding at least.
That being said, it may well perform fine, just have to fiddle with it.
I'd time it by ear, adjust pump with it running and warmed up, see if retarding it quiets it down.
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#7
by
honda_is_the_best
on 26 Aug, 2010 10:39
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idk if there is really gonna be a timing spec for mixed and matched pumps and injectors. like i said, the AAZ pump has a goofy cam plate with a pilot injection bump, then the actual injection bump. but i would say that 1.0mm is too far advanced. whats stock spec for these engines?.85mm or something?
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#8
by
Mark(The Miser)UK
on 26 Aug, 2010 12:12
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hi
is there a way to identify is the clatter of an engine is produced by injection or lifters?
the thing is that i install a 1Y engine on my passat that was sitting for 2 and a half years.
put a gt2052v and a 1.6gtd pump,using the cleaned and pressure tested 1.9 dual stage injectors that were stock on the passat.
timed the pump before install and set it to 1.00mm.
now the car starts fine but the engine is somewhat loud,almost reminding me the previous 1.6 solid lifters that i had...
shouldnt be the 1.9 quieter?
i heard clatter but what is the source?
isnt 1.00mm a good place for a 1.6 pump on 1.9 injectors and engine?
To distinguish valve clatter from pinking type noises, simply slacken pump so that you can retard it whilst idling. Cam ticking won't change whilst the other will...
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#9
by
carrizog60
on 29 Aug, 2010 07:18
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will have to try that then.
other thing:
when starting the engine it marks the floor with something that i would best describe as water mixed with soot...but there is no rain lately.
it doesnt burn oil(i dont smell it and doesent smoke)so what could it be?
only do that at start,after that dont do anything even i step on go pedal...
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#10
by
arnold
on 29 Aug, 2010 08:35
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That is condensation forming on the inside of your exhoust pipes when the hot pipes cool,it mixes with the soot and when you start this lovely mixture gets blown out,no worries if its not alot.
When its a real pool of water after a couple minutes of idling it would indicate blown HG or cracked head allowing coolant in the exhoust