I have a 1986 Spider Graduate, recently bought from online seller. I'm also new at restoring cars. So far, I've just cleaned and re-oiled the K&N air filter, and put new gas in the tank. The oil needs changed I'm sure, but the oil pressure guage indicates a pretty low pressure, and it idles very rough, threatening to die if I let off the gas. The oil dipstick seems to indicate the oil is full. What might cause the low oil pressure, if the gauge is correct, and I am reading the dipstick correctly?
Also, the car has rust damage on the underside. What is the best way to fix this?
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Re: Low Oil Pressure and rough idle
Please understand, all I can offer you are suggestions, since I don't have access to hands on testing. You might first change oil and filter.
If going by the oil pressure guage, low oil pressure can mean worn crankshaft bearings, as the clearance between bearings and crankshaft is what determines oil pressure.
Of course a worn oil pump can cause the same problem.
You might want to connect an external oil pressure guage to the engine to verify the pressure reading.
The rough running at this point would be hard to pin poit.
Because I do not know the extent of the rust, I can suggest that you consider having it undercoated.
Again, I can only make suggestion because you need an absoluate diagnosis.
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first of all,the spider assembly,also known as injector nozzles are located on top of the physical intake manifold,normally there should not be any conflict whatsoever servicing the spider assembly to cause any oil starvation issues. As far as your plethora of other problems,maybe related to your issue,but doubtful,you may not want to hear this but you really need to take this vehicle to a reasonable,also very competent technician to diagnose the list of problems,i strongly suggest that you cease any more semi pro help or the hole will certainly get much deeper!!!!
I think I would remove the sump and check that the oil pick up has been tightened properly or someone hasn't left a bit of rag in there blocking up the strainer. Was a new gasket on the pickup used or in some cases a new right sized "o" ring. It seems like you are pulling air as well as oil into the pump.
Here's an eBay seller's page...has a LOT of Corvette parts including '86 Corvette parts. If nothing else, hit "contact seller" and send him an email asking if he knows where to acquire the parts. Good luck! http://myworld.ebay.com/corvettemack/
Have you recently had an oil and filter change? Its possible the old "o"ring seal for the old filter got
left stuck in place. I've seen this before and when the new filter is installed the new seal does'nt make a good seal.
If there was'nt a recent oil change, check the valve cover gaskets and the oil pressure sending
unit. I had one crack and start leaking once, it just about drove me crazy before I found it.
Hope this helps.
The oil filter is underneath (you can see it from above though) toward the front of the engine on the left side of the engine. If looking from above, lean over the air cleaner housing (from the left side of the car) and look straight down.
If you purchased the 2002 Range Rover from an individual seller, and it was advertised "as is" or you did not have it inspected by an auto mechanic prior to completing the purchase, you may be stuck with paying to have the oil leak repaired. You still may wish to contact the seller, explain the situation, and ask him/her to pay for all or part of the repair.
If you purchased the Range Rover from an automobile dealer (a used car dealer or a new/used car dealer), contact the dealer and explain the oil leak situation. Most reputable dealers will have the problem fixed at their expense. If the dealer does not do that, they you know never to buy from that dealer again and you can post your comments on one or more of the many review websites, giving the dealer a negative review.
Bottom line: The oil leak needs to be repaired . . . and soon.