Engine runs good then I hear a tapping noise. could I have a bridge broke inside the engine? 1987 brougham with a 350 Olds motor.

Here you go copy and past then click on the first picture. It's number 5. https://www.google.com/search?client=ms-android-americamovil-us&ei=59KZWYn7DcPymQG4yoOIDw&q=1987+oldsmobile+delta+88+royale+brougham+map+sensor+location&oq=1987+oldsmobile+delta+88+royale+brougham+map+sensor+location&gs_l=mobile-gws-serp.3...4920.20339.0.21667.21.21.0.0.0.0.406.5585.0j1j16j2j1.20.0....0...1.1j4.64.mobile-gws-serp..1.17.4932...0j0i22i30k1j33i22i29i30k1j33i160k1j33i21k1.dB-spKCclH4

It's not a direct bolt in. (sorry) Olds mounts and housing aren't even close. Just about any olds motor (you can find them at any salvage/engine rebuilder pretty reasonable) will bolt in. It would take alot of work to work the chev into Caddy.

IF THIS IS A RWD AND HAS A305/350 ENGINE W/CARB YOU WILL NEED A GOOD SCANNER

When was the last time you replaced your plugs, wires, cap and rotor? Cold electrical components perform better than hot ones.

Engine knock Huh? In order to qualify the term "Knock", Let me get you to perform some simple task/observation. Typically, if you hear a noise on top of your motor that can be described as a light knock, usually going tap, tap, tap, tapping along at double the tempo, of your motor spinning, Your oil pump may be having trouble getting oil to the top where the valve's and rocker arms are. If you hear a "Knock" by bending over or kneeling beside one of your "front wheel well's"and stick your head up to the well, providing a vantage point to "hear" whats going on at the lower part of the engine. A knock from here will/can indicate a potentially overheated, under lubricated, rod or crank bearing that could seize the motor. This (theretical) crank bearing would be sounding off at half the tempo of the rocker arms above., with a deep, dark klunk that would defintly present itself as the sort of noise that damages metal parts. Now, that being said.....common sense goes a long way, people....1.) Most people are aware of the maintenance that has been performed on a particular engine, the quality and quantity of that maint. and when the last time it was ran out of oil or water. For those who fall into the " lack of maintenence" catagory, you probably already know why your engine or driveline sound as it does. If you happen to take particulary good care of your car, there is a good chance that whatever noise or "happening" might be going on, it'll be much easier to remedy. There are always exceptions to every rule. Remember, its not what will happen, it's what can happen. Take care of your car, and it will take care of you. Theroad

Sounds like crank sensor located behind crank pulley,or possible crank pulley comming apart.common

Then your problem is in the glow plugs or the glow plug timer.do you hear and see your normal wait to start and hear the clicking noise from the motor.Realy switch in back of motor..

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

you have 3 choices.
1) Bad battery
2)Starter motor solenoid is inoperative or starter motor itself is inoperative
3) your engine is locked up
How old is your battery and are the connections to the starter motor good?
Do you hear a clicking noise when you try to start the engine?
Do you have a clunk noise when you try to start it?

If dirty connections then clean the terminals andtry to start engine.
Clicking noise means starter solenoid is picking up but starter motor is disunctional and needs replacement.
If the noise is a clunk then your engine is locked up for whatever reason.
Last but not least if you hear the starter motor runningand a metalic grinding then the star is bad on the starter motor which means replacement of same.

First off you have to determine if the original engine in the car is an olds engine or chevy or the buick V6, - if it has the Olds307 the starter will be on the drivers side do not replace it with a Chevy motor the trans wont bolt up and if you try to transplant the chevy trans and engine you are going to run into crossmember problems driveshaft issues and alot of grief - find an Olds Rocket 350 - the older the better - it will save time and money and the Olds 350's put out a hell of alot more horses than a chevy like almost 100 more STOCK!!, a and will take a beating, try to find one pre 1975 but mor common are the 1977 (the last year) - or take the 307 to a macine shop and have it made into a rocket 350 also a cheap route.

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