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put my new inj. pump in by chrissev on 06 Mar, 2005 19:24
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Installed my rebuilt injection pump and wow, what a change. I now have a brand new car in an 18 year old body. I just touch the pedal and it revs and has tons of power. There's low end torque and horsepower that was never there before. It's a totally different car from what it was with the old fuel injection pump with 400,000km on it. Really amazing. I never expected that big a change. I feel like going driving now cause it's just so much fun. Really powerful and peppy, just amazing.
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#1 by jtanguay on 06 Mar, 2005 21:36
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Don't forget to add power systems cetane booster for that extra kick (and to lubricate the pump to protect your new investment).
Glad to hear you've got good results!!! -
#2 by TDIMeister on 07 Mar, 2005 09:38
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If you're impressed with an 88 TD with a fresh pump, I think you'd be stupefied with a modded TDI :lol:
I see you're in Toronto; I'm in Oakville; we have a weekly GTG in Burlington every Tuesday rain-or-shine at a restaurant at Appleby Line (off the QEW) and Upper Middle Rd.
PM me for more details, and I'd be pleased to take you for a test ride
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#3 by Red Rabbit on 07 Mar, 2005 16:57
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Chrissev....did you do your own pump rebuild, or have it done elsewhere?...if so where.......
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#4 by jtanguay on 07 Mar, 2005 22:47
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Hehe TDI Meister. I wish I could afford a TDI
The good old IDI will just have to do for now!
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#5 by chrissev on 08 Mar, 2005 07:08
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Quote from: "Red Rabbit"
Chrissev....did you do your own pump rebuild, or have it done elsewhere?...if so where.......
I bought a rebuilt pump from vwdieselparts.com. Was sent up from the USA. It was the cheapest option, as rebuilt pumps in Canada are quite expensive. I put it in myself in my garage (mild weather on the weekend). Worst problem I had was the stupid injection pump locking pin doesn't lock the pump and I had to hold the pump at TDC with one hand while I put the camshaft sprocket back on with the other. Luckily my engine is rebuilt and has good compression so the crankshaft didn't move. I actually was sent a 1985 pump without the two detent cold start with idle boost so that's a little different, but everything else on the pump is the same. Replaced the timing belt and the water pump while I was at it because it's really hard to get at the top bolts for the water pump with the injection pump in place and those water pumps usually only last around 150,000km so I just did it as an insurance policy. -
#6 by Red Rabbit on 08 Mar, 2005 17:21
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So what are the symptoms of an injection pump that needs a rebuild? My 84 1.6TD starts up great, runs fine,has some greyish/black smoke on hard acceleration/hill climbing (which I'd love to reduce or eliminate). But it's got over 420,000 km on it. What are the warning signs?........
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#7 by srivett on 08 Mar, 2005 18:47
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Fuel leaks, hard starting, continuous air bubbles in lines, pump seizure or fragmentation, side play in the driving shaft which allows the timing belt to slide off, etc. I'm sure there are more less obvious reasons as well.
Steve -
#8 by chrissev on 08 Mar, 2005 20:01
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Quote from: "Red Rabbit"
So what are the symptoms of an injection pump that needs a rebuild? My 84 1.6TD starts up great, runs fine,has some greyish/black smoke on hard acceleration/hill climbing (which I'd love to reduce or eliminate). But it's got over 420,000 km on it. What are the warning signs?........
Hmmm, maybe I could just tell you the difference between the old pump and the new pump in my car. Idle: old pump: uneven, shaky, hesitating idle, and if I revved the motor and then let it drop, it would go below idle, shake a bit, then slowly come back up to idle again. New pump: idles at 1000rpm, touch the pedal and it jumps up to 2500 really quickly. Lots of peppiness. Never goes below 1000. Feels like it's always ready to jump to life. The turbo: old pump: no noticeable boost under 3000rpm. Above 3000 rpm, some boost, but not all the time, kind of came and went. I thought my turbo was screwed. New pump: boost at just over idle. Really scared me at first when I had the car in first gear driving through a parking lot at around 1400rpm and the turbo kicked in and the car shot forward. It's almost hard to control now, but definately more fun. Starting from 1st from a stop, I get boost maybe two seconds into the start, regardless of rpm. Really takes off above 2000rpm. My main problem now is controlling the car. It wants to go. General driveability: Old pump: car was a dog. Had to really press on the pedal to get it to go. I got used to driving with the pedal half way down because that was the only way I could keep up with traffic. New pump: touch the pedal, car shoots forward. I haven't tried pressing down too far yet because I really don't need to. The engine just screams when it accelerates, and I am hardly giving it any fuel at all. It feels like a new car. Hot weather starting: old pump: the car had to be cranked quite a while before it would start when hot. I was told this was because the pump was worn out and couldn't develop enough fuel pressure to open the injectors (155bar injectors open at around 2000psi). This is worse when it is hot because metal expands when heated so worn parts have even bigger wear problems when hot. New pump: never tested it yet in hot weather (it's -15 outside right now). Hopefully this problem will be solved.
The main problem I had was just lack of power, poor fuel economy, and a general lack of peppiness and lack of life in the engine. With the new pump it's free revving and very powerful. Completely different from how it was.
You need to remember though that my engine was rebuilt 15,000km ago so essentially I have a fresh rebuilt engine and a fresh rebuilt pump, and also fresh rebuilt 155bar injectors. You might not get as good results with an old motor with weak compression. - all this in a rusty 18 year old jetta with faded paint and cheap vw fox rims, a total sleeper car
Next up is rebuild the cylinder head and add an intercooler.
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#9 by gropar on 12 Mar, 2005 15:51
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I wish I could be that happy about mine.
Freshly rebuilt with new (Bosch) injectors, the engine is very noisy (with a very loud clacking sound, as if timing was way too advanced) and has very little guts.
Of course, before the rebuilt, the pump adjustments were tweaked a little and now it is back to stock settings. Yet...
I think I will first bring max fueling up a little, then see for the idle to be set back where it should be.
Might not want to touch residual fueling : right now, with no load at all, the engine takes forever to rev (especially noticable when double-clutching). Total lack of (very)low-end torque (starting in first gear as never been such a delicate maneuvre).
The mileage is not worst than it used to be, but I expected it be better, especially with the new injectors.
Pump timing is fine (0,95), injectors are the right ones (1.9td and no 1.6 -- wich I check out to make shure).
I will turn a few screws and see what it will be like. -
#10 by Dr. Diesel on 12 Mar, 2005 20:45
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Quote from: "chrissev rebuilt pumps in Canada are quite expensive.[/quote
how much was the total by the time the pump was in your hands? -
#11 by Patrick on 13 Mar, 2005 05:05
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Good question! I was talking to a friend of mine that runs a shop in london, he says they run about 7-800 here.
Exchange, duty, shipping, etc on top of US price comes to? -
#12 by jtanguay on 13 Mar, 2005 09:45
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um... ya for that price, definitely use power systems cetane booster and pump lubricator I add a little splash of it each fill and it definitely helps accel
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#13 by fspGTD on 13 Mar, 2005 11:22
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vwdieselparts advertises reman injection pump for $650 US.
By the way... I would not recommend buying any reman diesel parts from vwdieselparts. The place they outsource their diesel injection work to does crappy work. A while ago, I got a set of rebuilt injectors through them, and when they arrived the injectors came inside plastic baggies with flecking-off paint inside the bags. One of the injectors was faulty, shooting a solid stream of diesel rather than a finely atomized cone of mist, probably because a paint fleck floating around inside the bag got into an injector's fuel inlet. When I had a local diesel injection specialist take the injector apart to rebuild it right, we found a cheap non-OEM brand of nozzle inside.
Also, getting an injection pump "rebuilt" will not restore it to new condition. Rebuilding a used but working pump consists generally of only the installation of an o-ring and seal kit like this one (http://home.comcast.net/~vwgtd/ve_mainkit.jpg), followed by the recalibration of the pump's timing and injection quantity adjustments on a test bench. The rotory pump and high pressure sections, which can show wear with high miles, are generally re-used, (unless you pay a lot more to have them replaced.)
Why a rebuilt pump might perform better than before, is probably only a result of it's timing and injection quantity being calibrated. -
#14 by chrissev on 14 Mar, 2005 12:49
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Quote from: "Dr. Diesel"Quote from: "chrissev rebuilt pumps in Canada are quite expensive.[/quote
how much was the total by the time the pump was in your hands?
$650. And I also bought this wonderful (albeit expensive) tool for removing the pulleys (cam and injection pump). Put it on the cam pulley, turn a bolt, crack, pulley is off. I was so impressed. Usually I have to hammer at the pulley and pry with a screwdriver for an hour at least to get it off so I can do the timing belt.