The place to discuss all matters relating to David Brown Tractors. You will need to register your user name before you can post. If you have already registered could you please make sure that your location details have been completed. Go to My Account in the Main Menu on the left, and then go into "Edit Your Information" and complete your location details. Give the Country (and State/Province if you wish) if outside the U.K. County if within the U.K. Location details helps other members if you need spares, technical advice, or the nearest practical help.


David Brown Tractor Club Ltd
Forum/website Disclaimer

1. This [forum/website/chat room] and the advice and opinions expressed herein is not a solution for mechanical, electrical, valuations, other problems, breakdowns or issues experienced in relation to the vehicles referenced.

2. If reliance is thought to be placed on any of the information guidance or input provided such information will be expressly confirmed as appropriate to be relied upon.

3. In the absence of any such confirmation no reliance should be suggested or inferred.

4. Members must not disclose information to 3rd parties in anticipation that reliance will be given by non-members.

5. Non-members must not purport to give advice on behalf of David Brown Tractor Club.

6. If you or someone you know is experiencing difficulties or repeated breakdowns you must seek assistance for an appropriately qualified expert who holds themselves out as such.

7. Any comments are free of charge and made or posted on an ex gratia basis. No member or non-member may advertise their professional services

Any user inactive for more than 3 months will automatically be deactivated, please contact admin@dbtc.co.uk if you would like to be reactivated.

Please be aware that your user name and entered location can be seen by all members. We only store information you have entered which is your email address and username, your IP is also stored, we have no access to private passwords.

If you do not agree with your information being stored, please do not register an account, If you wish to unsubscribe at any time please email admin@dbtc.co.uk giving your username.

Amended 27/10/18

Moderators: Segrie61, admin

Post Reply
User avatar
Posts: 58
Joined: Fri Mar 11, 2011 7:59 pm
Location: kerry ,ireland


Post by gerard » Tue Nov 24, 2015 11:10 pm

Gave my 1690t engine a hand up rings headgasket valves con rod bearings and injectors all done.problem is its still slow to start .the injector pump is turned in towards engine a boy a quarter of a inch from Mark and screw on top with 13 nut is shown a lot of thread what way should pump b I put pump back to original mark but made no difference any advice.

User avatar
Posts: 3898
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

RE: 1690

Post by ollek » Wed Nov 25, 2015 7:21 am

The 1690T has low compression pistons. This results in that the starting of the engine is a bit "slow" You will have to have a fully charged battery and good contacts between the battery cables, ground and the starter motor. You also have to check that the Thermostat system is working properly and use the system in the correct way. Do not tamper with the injection pump and the pump timing, it will make things worse and can lead to damage to the pistons and the piston rings.

User avatar
Posts: 1065
Joined: Sun May 12, 2013 10:38 am
Location: Preston

RE: 1690

Post by case-ih1594 » Wed Nov 25, 2015 8:37 am

Hi, I would say the next thing required is the injection pump being reconditioned. Somehow, if anything, doing up injectors / valves / rings only seems to highlight the fact that the pump is worn. I know from experience.

Posts: 1707
Joined: Thu Jun 12, 2008 9:17 pm
Location: Holmfirth, Huddersfield

Post by broadsword » Wed Nov 25, 2015 9:38 am

the 6 cylinder engines can be slow starters and smoke alarmingly for the first 2/3 minutes - not all do, but some do - it tends to be the nature of the engines I`m afraid so tend to agree with olleks point.
If you can get something on you tube perhaps some may be able to comment - not knowing the previous ownership but they are also prone to having the pumps wound on to get more power (and smoke!!) from power crazed owners!!!

Good Luck


Posts: 1327
Joined: Tue Mar 14, 2006 8:49 pm
Location: South Yorkshire

Post by JamesF » Wed Nov 25, 2015 10:00 am

My own 1690t smokes alarmingly when started from cold although it doesn't take any starting.

It needs 10 mins running before the smoke clears but once it has cleared it runs spotlessly.

It's normal for a new engine to be a slow starter and smoke until it's run in.

Line the injector pump up with the original timing mark.

As ollek says the thermostart needs to be in working order, it won't start properly without the cold start heater plug working. Avoid the temptation to use the excess fuel button on the pump, they don't like it!

Post Reply

Who is online

Users browsing this forum: rid54 and 12 guests