DG1900 locks after approx 260 degrees revolution
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DG1900 locks after approx 260 degrees revolution
1985 DG 1900 early version cooling. Can only rotate engine 300 degrees on timing wheel either clockwise or anti- clockwise before its locks. Whats the most obvious issue before l pull engine from van.
Regards
Stuart
Regards
Stuart
MaxStu
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
- 937carrera
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Re: DG1900 locks after approx 260 degrees revolution
Initial thought, dropped valve, piston contacting static valve head ?
You can check that without dropping the engine
What's the history of the engine ?
You can check that without dropping the engine
What's the history of the engine ?
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
Re: DG1900 locks after approx 260 degrees revolution
Bought as a non runner knowing engine fault. Working up to Dec 2017. Big backfire through carb which melted pancake plastic on LPG. Have post 1985 spare engine. But trying to isolate and fix problem with engine in situ.
MaxStu
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
Re: DG1900 locks after approx 260 degrees revolution
What is the easiest way to check why engine locks?
MaxStu
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
- Oldiebut goodie
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Re: DG1900 locks after approx 260 degrees revolution
Bent valve would be my first thought.
Cover off to find which valve isn't working on the rotation that you can do. Or screwdriver/steel rod stethoscope on the head and you should be able to hear any contact.
Cover off to find which valve isn't working on the rotation that you can do. Or screwdriver/steel rod stethoscope on the head and you should be able to hear any contact.
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- tobydog
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Re: DG1900 locks after approx 260 degrees revolution
Take the rocker box covers off and look at the valves?
Knowledge is power
1970 CU
1970 CU
- 937carrera
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- Joined: 05 Apr 2015, 19:29
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Re: DG1900 locks after approx 260 degrees revolution
Plugs out, rocker covers off.
Initial inspection to see if there's a broken valve / valve spring
Try and identify which cylinder it is by seeing at what part of the crank revolution the engine cannot be rotated
Initial inspection to see if there's a broken valve / valve spring
Try and identify which cylinder it is by seeing at what part of the crank revolution the engine cannot be rotated
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
Re: DG1900 locks after approx 260 degrees revolution
Thanks. Did above. But cant get full revolution to isolated which valve is doing the naughtyy deeds.
MaxStu
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
- 937carrera
- Registered user
- Posts: 3599
- Joined: 05 Apr 2015, 19:29
- 80-90 Mem No: 16333
- Location: N Yorks.
Re: DG1900 locks after approx 260 degrees revolution
Which part of the crank revolution can you not access (use the fan pulley as reference, maybe mark TDC with paint if not already done) ?
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
Re: DG1900 locks after approx 260 degrees revolution
Using Tdc marker on crank pulley wheel. Have found one valve stem badly damaged and corresponding valve adjuster chipped on end
Too dark to photo but reckon head off and inspection. Hopefully isolated to head only as engine still rotates as mentioned above.
Too dark to photo but reckon head off and inspection. Hopefully isolated to head only as engine still rotates as mentioned above.
MaxStu
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
- 937carrera
- Registered user
- Posts: 3599
- Joined: 05 Apr 2015, 19:29
- 80-90 Mem No: 16333
- Location: N Yorks.
Re: DG1900 locks after approx 260 degrees revolution
Off with her head then, see what the damage is.
I bought a Polo with an issue. Turned out one of the timing belts had stripped. Off with her head and she only needed two valves..... less than £8 each at ECP
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
Re: DG1900 locks after approx 260 degrees revolution
Yep! Off with her head.
Or Ive got a spare working 2.1 on carb but not certain if costly to adjust plumbing from pre 1985 to post 1985? First time lve played with pre 85 style DG.
Or Ive got a spare working 2.1 on carb but not certain if costly to adjust plumbing from pre 1985 to post 1985? First time lve played with pre 85 style DG.
MaxStu
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
- 937carrera
- Registered user
- Posts: 3599
- Joined: 05 Apr 2015, 19:29
- 80-90 Mem No: 16333
- Location: N Yorks.
Re: DG1900 locks after approx 260 degrees revolution
I don't believe it's that much work to remove /refurb one head and then you will have two working engines.
I haven't worked on a WBX, but from what I have read I believe it is possible to do a head with the engine in situ. Tricky, but possible. Itchyfeet among others will know.
You should at least remove the head in situ, being optimistic that you can fix the engine without having to remove it. If you can't, you've just spent a bit more time to get to the same place.
I haven't worked on a WBX, but from what I have read I believe it is possible to do a head with the engine in situ. Tricky, but possible. Itchyfeet among others will know.
You should at least remove the head in situ, being optimistic that you can fix the engine without having to remove it. If you can't, you've just spent a bit more time to get to the same place.
1981 RHD 2.0 Aircooled Leisuredrive project, CU engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
1990 RHD 1.9 Auto Sleeper with DF/DG engine
Re: DG1900 locks after approx 260 degrees revolution
In total agreement with your philosophy.
MaxStu
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
"Blissfully happy in your presence".
- itchyfeet
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Re: DG1900 locks after approx 260 degrees revolution
USB endoscope in plug hole or into sump may tell you something
get them for under 10 quid on ebay
get them for under 10 quid on ebay