Cruisers Forum
 


Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 22-10-2021, 02:33   #1
Registered User

Join Date: Mar 2019
Posts: 17
Volvo Penta D2-75F starting in half throtle

The manual of Volvo Penta D2-75F recommends to start a cold engine in half throttle.
I used to start it always in off position. Now it starts only in half throttle. Or it takes few attempts if I try to start it in 'off' position.
It's only 20C outside so the engine is not really cold.

Fuel like seems to be OK. Pump is hard to press.

On my previous boat I had a Yanmar and never knew that it it should be started in half throttle. It was fine even in 5C outside.

So my question is could it be a sign that something is about to break?
colonel is offline   Reply With Quote
Old 22-10-2021, 08:38   #2
Senior Cruiser
 
tkeithlu's Avatar

Cruisers Forum Supporter

Join Date: Feb 2012
Location: Carrabelle, Florida
Boat: Fiberglas shattering 44' steel trawler
Posts: 3,929
Re: Volvo Penta D2-75F starting in half throtle

Loss of compression and a restriction in the fuel delivery could each cause that. So could a stretched or loose throttle cable. All could be more gradual than "about to break." Do you get full RPM and power once it's started? Are you getting any smoke after starting?

If it concerns you, the easy checks are the cable and the filters. Next might be a compression check.
__________________
Never let anything mechanical know that you are in a hurry.
tkeithlu is offline   Reply With Quote
Old 22-10-2021, 23:13   #3
Registered User

Join Date: Mar 2019
Posts: 17
Re: Volvo Penta D2-75F starting in half throtle

Quote:
Originally Posted by tkeithlu View Post
Loss of compression and a restriction in the fuel delivery could each cause that. So could a stretched or loose throttle cable. All could be more gradual than "about to break." Do you get full RPM and power once it's started? Are you getting any smoke after starting?
Loss of compression was my first thought but the engine is only 400hours.
There is no RPM/power loss and no any smoke.
Everything is fine if started according to the manual.
colonel is offline   Reply With Quote
Reply

Tags
penta, rot, volvo

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Volvo D2 75F Waste-gate stuck Kuno Engines and Propulsion Systems 38 22-10-2021 02:06
Anchor chain rust half and half Bambooboat Anchoring & Mooring 11 01-05-2020 13:06
Engine Trans and throtle control Celestialsailor Engines and Propulsion Systems 7 13-01-2014 09:02
Cruise Half Year - Work Half Year? windsaloft Boat Ownership & Making a Living 70 15-06-2010 16:15

Advertise Here


All times are GMT -7. The time now is 20:47.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.