5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
This may be a problem but sometimes you can fix it chemicaly. this will run you about $100.00 first get all these products. (1) 5 quarts oil and one quart of lucas this will help bring the motor back to life. (2) If there is water and oil mix, then you need a good engine flush this is only like $10.00 this will clean all oil water mix. (3) now the important, part pick the best head gasket repare fluid.(you want to get one that looks good because the crappy ones won't work) (4) you need to get all new coolant and if available a additive called ..water wetter.. it makes the car run cooler. (5) you need a oil filter. All this stuff should be around $100.000 to $150.00 tops dependimg on you local prices. Now that you have all the stuff it will take like 24 hours because you will have to use all the stuff you got in this order (1) flush the antifreeze out of your rariator and engine thougherly (dont forget toturn the heater on high to get the antifreeze out of the whole system) because the blocksealer will mix with it and stick to it and clog your radiater so flush till clear or as good as posible. (2) run the engine flush through the oil and the car has to run at idle speed for like 5 minutes with no reving (the car starts to ping and sound like hell this is normal for a flush). (3) now drain the oil and take out the oil filter and flush the radiater again if it looks like it got dirty. (4) now make sure radiater is almost full (with water only for the rest of this job untill very end so you don't clog radiater but don't forget if you live somewhere that gets cold) or if full you may need to drain a small amount so you can add the head gasket/block sealer and then replace the new oil filter, add oil, and Lucus. (5) now your almost done most of the good block sealers tell you to find the spark plug that has a missfire ant to remove it and then the block sealer kit should tell you to run the car for 5 minutes w/out the plug in then turn the car off put plug back in and top off the radiater and then you have to run the car for like 45 minutes at like 1500rpm with the heater on high and then you turn the car off and park it for 16 to 24 hours with the radiater cap off so theres no preasure back on the system (let the car cool a little bit befor removing cap). (6) the next day flush the radiater and don't forget to turn the heater on high to get the sealer all out and then fill with water and antifreeze and if available water wetter its made by redline and I live in Florida trust me it keeps the car running cooler. This is a backyard way of saving your motor but if you follow the directions it will hold forever but the real problem is what caused the head gasket to go out because this is a part that doesn't just go bad.(good luck it will work if you make it work) Plus its cheaper than a $1,000.00 dollar repair or a $3,800.00 dollar motor swap.
^ dont do this! fix it right Any thing that with blug the leak in the gasket WILL blug everything else!
How bad is it blown? oil in water? water in oil? burning coolant?
__________________ 1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded I am Captain Obvious
witeshark is right. Its a common problem on the 3.5L. Luckily, the bottom end on the engine is really tough. Also, the block is strong. Remove the head and take it to a good machine shop and get it looked at. You might get lucky and all you'll need is the head gasket. If the head is cracked or warped, then you'll definitely need a new head. A good rebuilt unit should do the trick. Also, don't forget to change your head bolts while your at it and buy the best gasket. It will save you some later grief. Best of luck
Also, don't forget to flush out your cooling system and your oil. You might want to upgrade to a better water pump. A lot of those water pumps came with plastic fins inside. The new ones are metal. That might have caused the failure to begin with(engine overheating)
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.