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Engine Specific Info and Questions => IDI Engine => Topic started by: Dizzy on July 21, 2007, 06:38:51 pm
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I have to ask ( I have posted on another forum and had no follow ups )
I dropped of my 85 Golf N/A diesel to have the injection pump gone through. It was leaking. But the car ran Strong ( OK not a race car, but strong for what it is ) . It has taken forever to get it back,So they said they would work on it today. I went down there and it is all back togeather. They resealed the pump and replaced a few wearing parts, New timeing belt ect. The car is skipping bad, and has no power. They seam to think it might be a tight valve ?? They have it narrowed down to the 4th cyl. I spoke with the prevoious owner becasue I rembered him saying somthing about turning up the injection pump( the shop has set it to factory spec's ). But he had just given it a little more fuel for a tad more omphhh !
Needless to say the car is still there. They will work on it agian Monday. Any ideas on what could cause this loss of power and skipping on the 4th cyl. They said when they pull the fuel line on #4 now there is no change in the idle. This car ran fantastic when it was taken in. Just had a fuel leak ( not even a bad one ) The shop mainly rebuilds injection pumps, and Turbos.It is a good size place. Just has me worried. Any Ideas ?????
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They might have installed a bad injector, it's not uncommon if it was not bench tested first.
You should get them to advance the timing a bit too, that usually helps
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Stick to your guns son... if it is running worse now then when you brought it in they did something bad....
Vince
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thats what I fear !
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If they pull the fuel line on #4 and it doesn't change anything then the injector isn't bleeding properly or it's defective. Tight valve? nope. Tell them to replace injector #4 or to pop-test all 4 of them. You're running on three cylinder and only have 54hp with four, do the math ;)
However, you shouldn't pay for the time they put on the car if the part they installed are defective.
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They said they pulled that injector and cleaned it. They didn't mention if it was getting fuel. I would think ( hope ) they checked that.
If they don't have the valves/injector timed right, could it have caused any engine damage ? That is my main fear at the time.
I asked them if they could do this job and they said yes without blinking an eye. It really worries me, because it ran so good when i took it in. I wouldn't drive it the way it is running now, period.
They said that it might have a sticking ( tight ) valve on 4. I'm woried that it might be bent ( or worse yet ) from the timing being off.
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By the way thanks for the thoughts.
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If they don't have the valves/injector timed right, could it have caused any engine damage ? That is my main fear at the time.
If the pump isn't timed right it won't cause engine damage but if the crank/cam timing isn't spot on, the pistons could say hello to your valves... and it's not a friendly hello.
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You can't clean the injectors, they need to be rebuilt.
Valves don't magically start sticking overnight, if that is actually the problem they probably did something wrong
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Well looks like Bad News , I called this morning and got another employee on the phone. He told me That Tim is on Vacation for a week, but he watched him time the car. I asked how they did it. He mentioned lining a line stright up and looking thru a plug on the Transmission ??? He also said there is only one way it will work. He thinks the car has a bent Valve ! I told him " The only way a valve could be bent is if the timing was set wrong". I was working out of town and unable to get down there. However I'm off tomorrow and will be there first thing in the morning. I guess I'll find out soon enough how bad this really is.
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Well looks like Bad News , I called this morning and got another employee on the phone. He told me That Tim is on Vacation for a week, but he watched him time the car. I asked how they did it. He mentioned lining a line stright up and looking thru a plug on the Transmission ??? He also said there is only one way it will work. He thinks the car has a bent Valve ! I told him " The only way a valve could be bent is if the timing was set wrong". I was working out of town and unable to get down there. However I'm off tomorrow and will be there first thing in the morning. I guess I'll find out soon enough how bad this really is.
He was putting the crank on TDC (marked on the flywheel when you look into the hole in the tranny). Then you set the cam so the lobes for cylinder #1 are pointing up and you lock it with a special tool.
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And if he didn't mention the phrase "dial gauge" then he didn't check the timing.
Bottom line: the car is running way worse than when you took it to them (if you had a bent valve you would have noticed it before)... they need to fix it !!
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It sounds like he physically timed the engine correctly based on the vague description you were given however as mentioned without the term " dial gauge" there is about a 1/1000 chance it is properly timed. Assuming that the timing was done correctly they either messed up the reseal or installed a bad injector
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Compression/injector check- Will tell them I want one while I wait. Thanks
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Tell them you don't expect to pay for it either....
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They pulled the head, It has a bent valve on #4. The head was sent to a machine shop where they started to clean it. Found some cracks in between the valces and stopped. sent the head back to the shop. If you look at the pictures on the Vortex thread http://forums.vwvortex.com/zerothread?id=2974124&page=5 (which are not my pictures) You will see what I'm refering to. The cracks in my head do not seam as bad as those pictured. The shop now says I need a new Head.
I don't know , but have heard that these cracks are common. Does this warrent a new head ? Need help. Thanks
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I don't know , but have heard that these cracks are common. Does this warrent a new head ? Need help. Thanks
YOU DON'T NEED A NEW HEAD! That shop obviously isn't used to working on diesels, I wouldn't trust them. I'd have a diesel shop work on your head instead. 99.9% of vw diesel heads will have those cracks between the valves, it's 100% normal.
If they argue you need a new head because of those cracks, tell them to **** off. I've seen several diesel heads, all of them had those cracks.
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Thanks, I'll be talking with them today, I will post the outcome of that conversation.