My freind has a 1987 standard 90 2.5td it runs fine untill its been on a long run then it will lose power he only uses it for short runs to the shops in the week and maybe a long run once a month. He says he has checked the obvios like, diesel filter, air filter, for oil leakes round the turbo. but is still none the wiser. can anyone help or is it just land rover character?
2.5td 19j Runs slow when warm.
- Thread starter littlenip
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pos
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Hello,
What I am going to suggest my sound a little long winded and equally disastrous but it is a well known problem with the dreaded 2.5 turbo diesel engine. Basically (this is the background bit) Land Rover acknowledged that the 2.5 N/A was a very reliable and capable engine, so they decided to "take it up a notch" and stick a turbo onto the head. They also made a few slight changes to the injection pump and some other parts of the oil return system and there you have it, the 19J. Adding the turbo and the beefed up injection pump meant that the engine typically over heated and suffered from a range of different problems, all of which point to the symptoms of your friends loss of power. If he was to take the head off the engine he might expect to find cracked pistons, melted rings, a split cylinder block (non repairable) or even a cracked head. Once the engine has warmed up, the aluminium pistons will expand ever so slightly, but perhaps just enough to open a crack enough to allow compression to escape. The same goes for the engine block if it has a crack in it somewhere.
I had the same problem with my 2.5 n/a not long ago. I drove it with the fan belt snapped, the bugger over heated and all four of my pistons cracked. It's a little bit rarer in my engine but it still happened, and I am fairly certain that you're looking at cracked pistons.
For the price it will cost (in parts to do it yourself alone) you could buy a 200 or 300 tdi and drop it in, or just pick up another TD or 12J off ebay and hope that it is in better condition!
The only way to tell is to take the head off (an hours job) and have a look
-pos
What I am going to suggest my sound a little long winded and equally disastrous but it is a well known problem with the dreaded 2.5 turbo diesel engine. Basically (this is the background bit) Land Rover acknowledged that the 2.5 N/A was a very reliable and capable engine, so they decided to "take it up a notch" and stick a turbo onto the head. They also made a few slight changes to the injection pump and some other parts of the oil return system and there you have it, the 19J. Adding the turbo and the beefed up injection pump meant that the engine typically over heated and suffered from a range of different problems, all of which point to the symptoms of your friends loss of power. If he was to take the head off the engine he might expect to find cracked pistons, melted rings, a split cylinder block (non repairable) or even a cracked head. Once the engine has warmed up, the aluminium pistons will expand ever so slightly, but perhaps just enough to open a crack enough to allow compression to escape. The same goes for the engine block if it has a crack in it somewhere.
I had the same problem with my 2.5 n/a not long ago. I drove it with the fan belt snapped, the bugger over heated and all four of my pistons cracked. It's a little bit rarer in my engine but it still happened, and I am fairly certain that you're looking at cracked pistons.
For the price it will cost (in parts to do it yourself alone) you could buy a 200 or 300 tdi and drop it in, or just pick up another TD or 12J off ebay and hope that it is in better condition!
The only way to tell is to take the head off (an hours job) and have a look
-pos
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i think Patman1200 mite have a 19j up fur grabs.
iannotts
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ask sirus how crap the 19j is pos, he ONLY did 1400miles in one week in his, must be crap eh!
oil dripper
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iannotts
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oil dripper
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No he has not i did sujest the brakes could be binding but I was just hopping it was an easy fix, I will tell him to check the gear, transfer box & diffs for oil. As regards the engine problem if its the pistons or head its terminal anyway so I would just drive it untill it goes bang. Cheers for the help could not imagine the local garage would not even have givin advice untill they worked on it so this advice is great cheers.
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