Hla Questions
02-25-2003, 04:28 PM
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Hla Questions
Ok Iv'e disussed this a little with random
and even he thinks it is wierd
i had a tik and thought it was an hla gone bad and the dealer ony had two so what the hell
i replaced the suspected hla but after removeing the cam the other six hla pumped up rock solid
and when i reinstalled the cam the three cyl with the old hla had 0 compression so i removed
the cam and put the in a press and they would not budge so i said what the hell people change cams and do not have to replace hla's
so thats when i cut one in half to whats going
on so i flushed all the oil out and had keep working carb cleaner in them to thin the oil
till the finaly colapsed and then reoiled them
pumped them a coulpe time and rock solid again
had to flush again
So the question is this normal has anyone else had this probem and if what would cause such a problem
Ps: when you look at the guts of an hla the core is like a piston and cylinder with a spring in between them with a one way check ball the ball has a tiny spring behind it
i change my oil every 3000 or three months and use engine flush every oil change
Thoughts?
[ February 25, 2003, 11:32 PM: Message edited by: XtremePc ]
and even he thinks it is wierd
i had a tik and thought it was an hla gone bad and the dealer ony had two so what the hell
i replaced the suspected hla but after removeing the cam the other six hla pumped up rock solid
and when i reinstalled the cam the three cyl with the old hla had 0 compression so i removed
the cam and put the in a press and they would not budge so i said what the hell people change cams and do not have to replace hla's
so thats when i cut one in half to whats going
on so i flushed all the oil out and had keep working carb cleaner in them to thin the oil
till the finaly colapsed and then reoiled them
pumped them a coulpe time and rock solid again
had to flush again
So the question is this normal has anyone else had this probem and if what would cause such a problem
Ps: when you look at the guts of an hla the core is like a piston and cylinder with a spring in between them with a one way check ball the ball has a tiny spring behind it
i change my oil every 3000 or three months and use engine flush every oil change
Thoughts?
[ February 25, 2003, 11:32 PM: Message edited by: XtremePc ]
02-25-2003, 05:01 PM
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Can you explain this sentence a little better? I don't exactly understand what you're saying.
i had a tik and thought it was an hla gone bad and the dealer ony had two so what the hell
What is a tik? And did the dealer have two of? I don't quite get ya'.
i had a tik and thought it was an hla gone bad and the dealer ony had two so what the hell
What is a tik? And did the dealer have two of? I don't quite get ya'.
02-25-2003, 06:47 PM
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its not weird, if you think about the history.
HLA's in 1996+ motors
1999, hyundai tells dealers to flush engines each service.
2000/2001, hyundai ditches HLAs
I had one that took 20minutes to prime at 2000rpm.
the oil holes in the head that go to the hla, and on the hla itself
is relatively small (1-2mm), and i imagine it wouldnt take much
gunk to clog them or the regulator.
engine flushes definately help if you dont change your
oil regularly.
clean oil and hi oil pressure is the only way to
keep them happy.
another thing i found useful was antidrain back valves
in the oil filter. once a HLA 'decompresses', it
can take awhile to pump up if oil pressure is low.
What oil viscosity are you using, and what temperature ranges do you have?
[ February 26, 2003, 01:50 AM: Message edited by: bryfx ]
HLA's in 1996+ motors
1999, hyundai tells dealers to flush engines each service.
2000/2001, hyundai ditches HLAs
I had one that took 20minutes to prime at 2000rpm.
the oil holes in the head that go to the hla, and on the hla itself
is relatively small (1-2mm), and i imagine it wouldnt take much
gunk to clog them or the regulator.
engine flushes definately help if you dont change your
oil regularly.
clean oil and hi oil pressure is the only way to
keep them happy.
another thing i found useful was antidrain back valves
in the oil filter. once a HLA 'decompresses', it
can take awhile to pump up if oil pressure is low.
What oil viscosity are you using, and what temperature ranges do you have?
[ February 26, 2003, 01:50 AM: Message edited by: bryfx ]
02-26-2003, 01:11 AM
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Vehicle: 2008 Toyota Prius 2006 Suzuki SV650S
Russ, the problem he's describing is that the HLA's "pumped up" with oil, but would not "deflate"
Bry, in the USA, the HLA's are used up to 2001, we only went to MLA's in 2003. He also states he does oil changes every 3000 miles and always uses oil flush. I do agree with you, that the only way a HLA would fail to "deflate", or in this case, "overinflate", is if the bleed valve was stuck/blocked.
I also wonder if anyone else has had this problem. Every time I've done a cam swap, I've had a BITCH of a time getting the car restarted...I'm wondering if that's because I was having similar symptoms. I'll have to run a compression check next time I do a cam swap.
Bry, in the USA, the HLA's are used up to 2001, we only went to MLA's in 2003. He also states he does oil changes every 3000 miles and always uses oil flush. I do agree with you, that the only way a HLA would fail to "deflate", or in this case, "overinflate", is if the bleed valve was stuck/blocked.
I also wonder if anyone else has had this problem. Every time I've done a cam swap, I've had a BITCH of a time getting the car restarted...I'm wondering if that's because I was having similar symptoms. I'll have to run a compression check next time I do a cam swap.
02-26-2003, 01:49 AM
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I'm planing on purchasing the SR high cams, Would you recomend replacing the HLA's? Once they were ticking, I'm at 30,000 miles. I did my oil change and used 15w40 and so far so good, but the again I live in Miami Fl. where the average temp is between 95-102 degrees Fahrenheit. 
02-26-2003, 02:11 AM
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why are you guys loosing compression after a cam swap? I'm not seeing the correlation between the HLA's and compression.
Is it because they're "stuck" solid that it's indefinitley pushing the valves open? Therefore loosing compression?
Is it because they're "stuck" solid that it's indefinitley pushing the valves open? Therefore loosing compression?
02-26-2003, 02:55 AM
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I had to replace my HLA,s in my 1997 Tiburon twice since i purchased it new in 98 of March
The first time 6 of them were literally shot this was in 1999.You can squeeze the Piston and it would move.At this time i had NOS and ran it for 3-4 months before the HLA's were ticking.
I recall i was at a Hyundai meet with All Tiburons and Brendon noticed the ticking noise and he advised me to change my HLA's.From then on i learned what that ticking noise meant and then experienced the HLA's go again 2 years later.
The second time i had to replace them was 2 years ago and 10 of then were gone.I still had NOS
Thank God for warranty smile.gif smile.gif smile.gif
The first time 6 of them were literally shot this was in 1999.You can squeeze the Piston and it would move.At this time i had NOS and ran it for 3-4 months before the HLA's were ticking.
I recall i was at a Hyundai meet with All Tiburons and Brendon noticed the ticking noise and he advised me to change my HLA's.From then on i learned what that ticking noise meant and then experienced the HLA's go again 2 years later.
The second time i had to replace them was 2 years ago and 10 of then were gone.I still had NOS
Thank God for warranty smile.gif smile.gif smile.gif
02-26-2003, 03:51 AM
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well like i said it's wierd
because i have been running nitrous for over 2 years and these hla were pumped up solid even in the press they barely deflated and after a good cleaning with carb and choke cleaner i refilled them with oil and and coulple sqeezes they were solid again
and it turned out that the tick was not even an hla but a bad timing belt
because i have been running nitrous for over 2 years and these hla were pumped up solid even in the press they barely deflated and after a good cleaning with carb and choke cleaner i refilled them with oil and and coulple sqeezes they were solid again
and it turned out that the tick was not even an hla but a bad timing belt
02-26-2003, 06:46 AM
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sorry, i missed your particular description, kinda
the reverse.
i think the main point is, they're quite sensetive
little buggers, and they can go funny by various
factors
(carbon in oil, oil too thin, oil too thick, not enouh
oil, etc etc)
even with perfect engine maintenance, you'll still
end up having to change atleast 1 hla every now
and then
the reverse.
i think the main point is, they're quite sensetive
little buggers, and they can go funny by various
factors
(carbon in oil, oil too thin, oil too thick, not enouh
oil, etc etc)
even with perfect engine maintenance, you'll still
end up having to change atleast 1 hla every now
and then
