Jump to content

Shift_Path90

Members
  • Posts

    17
  • Joined

  • Last visited

Previous Fields

  • Your Pathfinder Info
    parents-in-law's pathy.
  • Place of Residence
    Jacksonville, FL
  • Mechanical Skill Level
    Standalone Tool Chest Mechanic
  • Your Age
    36-40
  • What do you consider yourself?
    Do Not Go Off-Road
  • Model
    SE
  • Year
    1990

Profile Information

  • Location
    Jacksonville
  • Country
    United States

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

Shift_Path90's Achievements

NPORA Newbie

NPORA Newbie (1/5)

0

Reputation

  1. It sounds like my mechanic believes that I am having rod knock versus stuck lifters. I'm searching for a replacement engine and have found a potential engine which states, "Nissan 3.0 Engine Pickup 2wd VG30E 8/89-8/95." I have a 1990 4wd. As far as I know the engine shouldn't be specific to 2wd vs 4wd, correct? Edit: ended up picking up a VG30E from a 95 donor. Thanks.
  2. Thanks for the advice. I wasn't planning on pulling the injectors and the lower manifold, but if there are a few hoses under there, I want to try to replace them. I'll pull the injectors and plan on replacing the seals on them as well.
  3. I have my intake manifold off at the moment as I am replacing all my valve lifters. I have read to replace hoses under the plenum, but there are quite a few there, and as I've been doing some research to purchase some of mine that look rough, I have found that some have been discontinued. Are there any hoses which are highly recommended to be replaced? My 1990 path has 135k miles on it at this time. I plan to replace all the rubber vacuum lines with silicone lines.
  4. The drivers side valve cover is leaking, so I may get into that, but it looks to be quite a bit more involved with that plenum removal. On the other hand it may make installing the Doug Thorley headers a little easier.
  5. I like that idea, as I am not entirely sure if there are any sludged up oil passages. How do you go about getting the kerosene out of the engine?
  6. Do you think that because I am unable to compress the lifters, that sludge has blocked the ports? I may soak a lifter in kerosene and see if it compresses after being cleaned up. I will take pictures of the components but everything looks pretty good. I may need to pick up a micrometer to do some measurements.
  7. I was only referring to compressing the valve lifters, not the valves themselves. I figured from the compression numbers that the valves and pistons/rings were all seating relatively well to build that pressure. Either way I have a new set of lifters on the way. I'm just wondering if there was a way for me to know by looking at the old ones whether they are really the culprit. I'm wondering if the problem could lie in the rockers and wear on them, despite them looking as expected. I figure even a really small amount of wear on the rockers or lifter would cause some metal to metal ticking sounds. The rockers on the shaft are pretty snug.
  8. I finished checking compression. C1: 165 C2: 155 C3: 160 C4: 155 C5: 165 C6: 160 I have also removed the right side valve cover, and removed the rocker assembly. There does not seem to be any abnormal wear on any components on initial inspection. There is some sludge build up in areas that do not get much oil flow. I will need to clean things up and take a closer look at surfaces. I inspected all the valve lifters and none seem to be squishy when I try to compress them, but I also cannot compress them. I used a 2 x 4 as to not damage the surface of the lifter, with all my weight on it, and it didn't budge. Should I be able to compress them?
  9. I have the lifters and gaskets ordered. I'm going to test compression on cylinder 4 and 6 today as I had the battery charged yesterday. I am planning on taking off the cover and remove the lifters for inspection. Any thoughts on any other things to do while the valve cover is off? Using seafoam, some other additive, or cleanser to clean off other components? If the right side lifter replacement resolves the tick, I'll plan on doing the driver side as well, but I'll need to plan on other parts to replace while the intake is off.
  10. Thanks Silverton. I have ordered another battery charger, which should be here by Wednesday. I may just drop it off to be tested and charged though, as the dead battery is the bottle neck to moving forward. I am interested to open it up to see what kind of issues there are. I have a set of headers waiting to be installed, and if I have to take the intake manifold off, it might be a good time to get those installed as well. But you all have me excited about getting this thing back on the road.
  11. I was able to find a loaner compression tester gauge. I was only able to test 5 out of the 6 cylinders, prior to the battery pooping out on me. I'll need to get it charged. The last cylinder is the dreaded number 6 on the back end of the engine. I'm unsure if the C4 number is accurate or if that is due to the battery losing power on me. C1: 165 C2: 155 C3: 160 C4: 150 C5: 165 Thanks again for the advice and help guys.
  12. Rockclymr, Thanks for the link and the information. It sounds like it is relatively straight forward. The ticking definitely sounds like it is coming from within the passenger side valve cover/head. I will see if I can get my hands on a compression tester to test for compression. I have ordered the valve lifters you linked, as well as the valve cover gasket that slartibartfast mentioned. I'm only going to open up the passenger side to remove/replace the valve lifters. Is there any issue with only doing one side initially? Thanks again.
  13. Rockyclymr, I have a fear of running it too long as I'm unsure what this is. If I do a compression test do I need to get it up to normal operating temps for accurate numbers? Slartibartfast, I've followed a few of your posts, and appreciate the info you've given the forum. If I open up the heads, would I just be trying to loosen up all the valves to see if any are stuck? If any are stuck, would I not need to pull the heads to have them rebuilt? Also is there an oil flush treatment you recommend before opening everything up?
  14. Can anyone guestimate whether this tick is an issue with a valve or an issue with a rod? I'm trying to decide on what to do with this Pathfinder. Video is taken with the phone close to the passenger side head. https://youtu.be/CWtFHRDVclw Background info. This is from my in-law's 90 Pathfinder, with 135k miles. It has sat for extended periods, and because of the low miles, they did not feel that they should change the oil at recommended intervals so it may have been changed once a year, if that. It starts without issue, but the ticking is fairly loud. No lights on the dash, and no codes under the passenger seat. Teeth on timing belt are correct, with marks on the sprockets at the right position. I've thought about swapping an engine, but a mechanic has suggest a complete rebuild to know what we will be getting. A neighbor believes it to be a sticky valve, and thinks I should pull the heads, and have them rebuilt. I have a budget of 3k to get this thing back up and running.
×
×
  • Create New...