Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

Reply
 
LinkBack Thread Tools Display Modes
Old 03-07-2019, 09:39 AM   #1
Registered User
 
Join Date: Dec 2014
Location: Northwich Cheshire UK
Posts: 21
Engine rattle, heat shields? Water pump? IMS?

Hi guys, 200 986 2.7 tiptronic.
.Finnally got the Boxster on the road after an enforced year stood.It sounded a bit rattly when I started it up.I thought it was the tapetts but it has persisted. I have done about 50 miles in it since all short journeys, and it still making the same noise.Not knowing much about these engines not sure if it's something more serious than a loose heat shield, water pump, alternator bearing???Its a rattling noise doesn't seem to have affected the performance, speed, acceleration, engine temperature. I have also noticed a slight smell of petrol in the car, but it again just lingers and goes. If I could upload a video you could hear it but the site only allows images.Hopefully see what you think.Im not driving it and am contemplating recovered to an Indy for assessment, so any suggestions will be gratefully received. Hopefully other 986 members club members will chime in.
marks44 is offline   Reply With Quote
Old 03-07-2019, 10:42 AM   #2
1998 Boxster Owner
 
Join Date: Mar 2015
Location: Alviso, CA
Posts: 136
Quote:
Originally Posted by marks44 View Post
Hi guys, 200 986 2.7 tiptronic.
.Finnally got the Boxster on the road after an enforced year stood.It sounded a bit rattly when I started it up.I thought it was the tapetts but it has persisted. I have done about 50 miles in it since all short journeys, and it still making the same noise.Not knowing much about these engines not sure if it's something more serious than a loose heat shield, water pump, alternator bearing???Its a rattling noise doesn't seem to have affected the performance, speed, acceleration, engine temperature. I have also noticed a slight smell of petrol in the car, but it again just lingers and goes. If I could upload a video you could hear it but the site only allows images.Hopefully see what you think.Im not driving it and am contemplating recovered to an Indy for assessment, so any suggestions will be gratefully received. Hopefully other 986 members club members will chime in.
Check your coolant level. Last time my 98 boxster was rattling the water pump was broke. The plastic blades were broken. I chose not to DIY so I had to top it off in order to drive it to the shop.
Benitom is offline   Reply With Quote
Old 03-07-2019, 01:25 PM   #3
Artist, 986S tinkerer
 
NewArt's Avatar
 
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,471
Is the noise constant at all speeds/rpm?
Does the sound change with rpm?
__________________
JesseJames
2004 986 S
987 air intake TB and plenum, Mantissport 2 litre sump, UDP, Bilstein B6 with H&R lowering spings, re71-rs for track, other stuff.
https://www.youtube.com/user/12shoes2
NewArt is offline   Reply With Quote
Old 03-07-2019, 02:31 PM   #4
Registered User
 
Join Date: Dec 2014
Location: Northwich Cheshire UK
Posts: 21
Quote:
Originally Posted by NewArt View Post
Is the noise constant at all speeds/rpm?
Does the sound change with rpm?
Not noticeable any change at speed or rpm, just can't hear it, the engine noise seems to drown it out until it slows down or I stop... It seems less noticeable as the engine come to normal operating temperature.
What would that indicate if it changed by rpm.?.. Trying not to be too dense but not familiar with boxer engines.
marks44 is offline   Reply With Quote
Old 03-07-2019, 02:50 PM   #5
Artist, 986S tinkerer
 
NewArt's Avatar
 
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,471
Well, heat shields would most often rattle at a certain rpm, often at idle or just above. An rpm related noise might indicate a pulley bearing or waterpump issue. I would pull off the access panel in the cabin and listen with a piece of plastic tubing or some such to isolate the source. Also bang around underneath with a rubber mallet so see if it’s not part of your exhaust system. Etc.
__________________
JesseJames
2004 986 S
987 air intake TB and plenum, Mantissport 2 litre sump, UDP, Bilstein B6 with H&R lowering spings, re71-rs for track, other stuff.
https://www.youtube.com/user/12shoes2
NewArt is offline   Reply With Quote
Old 03-08-2019, 09:30 AM   #6
Registered User
 
Join Date: Dec 2014
Location: Northwich Cheshire UK
Posts: 21
Thanks new art I think it's a knackered water pump. Not a job I can tackle so off to a Indy.


https://youtu.be/obk2wPQn344
marks44 is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 02:40 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page