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Author Why does my C20 LET
Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
10th Feb 05 at 09:31   View User's Profile U2U Member Reply With Quote
Sound like a diesel


Sounds really tappety. Theres plenty oil in the car, topped it up incase it was this it has made no difference. When im at low revs pulling away you really would think i was driving a transit with a cherry bomb


Any ideas guys? Im not too hot on engines so i dont really have a clue other than putting more oil in

Please help moi!
Rileysport
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Registered: 18th Jun 04
Location: West Yorkshire
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10th Feb 05 at 09:33   View User's Profile U2U Member Reply With Quote
lifters are boogered, knackered cam ?
Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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10th Feb 05 at 09:34   View User's Profile U2U Member Reply With Quote
just from reading some threads on mig... i'd say your lifters.....
3CorsaMeal
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Registered: 11th Apr 02
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10th Feb 05 at 09:47   View User's Profile U2U Member Reply With Quote
sounds like my 14xe, thats like a diesel now, not looked after mine tho
Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
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10th Feb 05 at 09:58   View User's Profile U2U Member Reply With Quote
is it just from cold or all the time constantly? could be fucked lifters but i heard your engine before and it sounded a peach.... so quite doubtfull. Do an oil change to see if it makes any difference. Dont run any of that cleaning angent shit in it though
Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
10th Feb 05 at 09:59   View User's Profile U2U Member Reply With Quote
What other effects would either of these produce?

As i seem to have strange problems at 1800-2100rpm as in, around there its jerky and down on power a noticable dip! but only between those revs and not when im using full throttle.


Getting worried now
Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
10th Feb 05 at 10:00   View User's Profile U2U Member Reply With Quote
Fad from the first day i had it it sounded noisy, but only for like 5mins when it was cold!


Its ALOT more noticable when cold, but it no longer goes away when warm. Only after the cars been run for a very long journey does it quieten down.


I think i best get lee to take a look
Rileysport
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Registered: 18th Jun 04
Location: West Yorkshire
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10th Feb 05 at 10:02   View User's Profile U2U Member Reply With Quote
low oil pressure in the head maybe, could be loadsa things
Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
10th Feb 05 at 10:04   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Jambo
Fad from the first day i had it it sounded noisy, but only for like 5mins when it was cold!


Its ALOT more noticable when cold, but it no longer goes away when warm. Only after the cars been run for a very long journey does it quieten down.


I think i best get lee to take a look


well from what you just said sounds pretty normal. Mine from cold used to chatter for around 15 mins and slowly quieten down. Then for the rest of the day it'll be fine. Its just where the lifters are drained of oil overnight and it takes a while for them to jack up. Also if your only doing short journeys its never going to quieten down.

Best bet would be to either replace the lifters or do frequent oil changes to see if you notice any difference.
Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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10th Feb 05 at 10:04   View User's Profile U2U Member Reply With Quote
should have read the small print of owning a LET

some mechanical knowledge is a must
Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
10th Feb 05 at 10:04   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by SRi-Co
low oil pressure in the head maybe, could be loadsa things


well check the oil presure light from cold...does it go out stright away or stay on for a few secs?
Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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10th Feb 05 at 10:10   View User's Profile U2U Member Reply With Quote
no enine management lights or oil lights at all. Nothing out the ordinary.


As i said when i first had it it was only noisy for like 5mins, now it is even loouder and doesnt go away, i do varied lengths of driving, but on way to work journey is roughly 25-30mins and it doesnt quieten down.


I do have a basic knolledge of engines siberia, i managed to identify and fix the last problem myself. just not that technical when it comes to things like this


How much do vaux rape you for new lifters?
Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
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10th Feb 05 at 10:16   View User's Profile U2U Member Reply With Quote
get them from auto vaux they are around £150 and aparently made in the same factory as the GM ones. then fin someone like shinee to fit them? I got LET lifters in mine and it purrrrrrsssss
Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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10th Feb 05 at 10:16   View User's Profile U2U Member Reply With Quote
www.autovaux.co.uk around £100ish.... then get someone to fit em...
Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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10th Feb 05 at 10:17   View User's Profile U2U Member Reply With Quote
fad stop copying me...
3CorsaMeal
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Registered: 11th Apr 02
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10th Feb 05 at 10:17   View User's Profile U2U Member Reply With Quote
http://www.migweb.co.uk/forums/showthread.php?t=167965&highlight=noisy+let

dunno if this thread will be any use, is talk about noisy tappets and headwork
Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
10th Feb 05 at 10:19   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Siberia
fad stop copying me...


get with the program kiddo you posted after me so whos copying?
Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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10th Feb 05 at 10:23   View User's Profile U2U Member Reply With Quote
i see cheers guys.

Well i guess an oil change is hwere to start, maybe it needs ot be run for a long time as well this week see if that improves it at all.


Its not doing any damage it being noisy is it?


Now i just have to sort my temp sensor and also see if its over fuellig
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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10th Feb 05 at 10:24   View User's Profile U2U Member Reply With Quote
all c20xe/lets have this problem.... just tired lifters,

Mine sounded like a bag of nails for 10mins or so till fully heated up. Try cleaning the lifters in a petrol bath, then soaking them in engine oil for a day or so, then replace
Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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10th Feb 05 at 10:32   View User's Profile U2U Member Reply With Quote
you can get the multrasonically cleaned cant you? Is that the same thing AK? lol
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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10th Feb 05 at 10:38   View User's Profile U2U Member Reply With Quote
nope.... sonic cleaning is the lifters chucked in a bath of cleansinf solution (dunno what) and ultrasonically vibrated clean.....

same idea, i.e cleanign them..... just a different and more professional process

not really DIY if you dont have an sonic bath

[Edited on 10-02-2005 by Adam Kindness]
Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
10th Feb 05 at 10:56   View User's Profile U2U Member Reply With Quote
yes i see your point
Greasemonkey
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Registered: 17th Apr 02
Location: Drives a Tractor
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10th Feb 05 at 11:57   View User's Profile U2U Member Reply With Quote
I love the sound of new lifters, swish swish swish, no more tap tap tap
Rileysport
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Registered: 18th Jun 04
Location: West Yorkshire
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10th Feb 05 at 11:58   View User's Profile U2U Member Reply With Quote
When i first started the x16 lump up, i thought wtf have i done... it sounded awfull, sweet as a nut now though
Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
10th Feb 05 at 12:06   View User's Profile U2U Member Reply With Quote
my yoke makes plenty of noise... i must start replacing stuff....

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