the wrong sort of noise
Discussion
oh knowledgeable ones .... i'm getting a ticking noise which i thought may be the manifold gaskets. i've tried with the piece of hose pipe to try and isolate the problem area but with no joy.
what are the symptoms of a worn cam? could it be this mysterious ticking? Ticks line up with revs, more prominent when warmed up. It is a '92 400 and covered 37k.
cheers all
what are the symptoms of a worn cam? could it be this mysterious ticking? Ticks line up with revs, more prominent when warmed up. It is a '92 400 and covered 37k.
cheers all
I've had both happen on my 4.3.
The ticking exactly followed revs regardless of gear or load and was a manifold gasket leak. It was the nearside rear manifold, my Indy could hear it with the bonnet up but I couldn't. With the bonnet down inside the car it was blooming easy to hear.
In my case the worn cam showed itself as a very slight misfire but no ticking. The cam is easy to see with the sump off and mine was rounded on two or three lobes.
Nick
The ticking exactly followed revs regardless of gear or load and was a manifold gasket leak. It was the nearside rear manifold, my Indy could hear it with the bonnet up but I couldn't. With the bonnet down inside the car it was blooming easy to hear.
In my case the worn cam showed itself as a very slight misfire but no ticking. The cam is easy to see with the sump off and mine was rounded on two or three lobes.
Nick
Thanks Nick, useful feedback. I think I may employ some ears less damaged by nightclubs!
Did you do either job yourself? I'm nervous about the exhaust as past experience with rusted bolts was a nightmare. I quite fancy having a go at the cam myself when the nights draw in but I ain't no expert!
Did you do either job yourself? I'm nervous about the exhaust as past experience with rusted bolts was a nightmare. I quite fancy having a go at the cam myself when the nights draw in but I ain't no expert!
Hi i have had the same problem with my 500, replacing the cam is a pretty straight forward but very time consuming job (at least it was for me as a first timer),but I did it on mine without any major problems. As for the ticking I have the same problem but even with a new cam, lifters, pushrods, chain/pullys, rockers I still have the same ticking, The car is now at a local rv8 expert having the rocker pedestals machined to get the pre-load correct. It can be a real nightmare to locate and get rid of that annoying tick.
If you rule out the manifolds its worth lifting off the rocker covers and checking all the tips on the rockers, I had 2 that had lost there tips.
Chris
If you rule out the manifolds its worth lifting off the rocker covers and checking all the tips on the rockers, I had 2 that had lost there tips.
Chris
cheers Chris. gives me confidence that I could have a go myself. I guess that the fact that it tends to tick more when it is warmer points away from loosing rocker tips? gasket is probably most suspect.
are you competent with a these sort of jobs? all i've really tackled in the past is an engine change which is very different to a strip and rebuild. kinda nervous i'd make it worse!
are you competent with a these sort of jobs? all i've really tackled in the past is an engine change which is very different to a strip and rebuild. kinda nervous i'd make it worse!
square-eyes said:
cheers Chris. gives me confidence that I could have a go myself. I guess that the fact that it tends to tick more when it is warmer points away from loosing rocker tips? gasket is probably most suspect.
are you competent with a these sort of jobs? all i've really tackled in the past is an engine change which is very different to a strip and rebuild. kinda nervous i'd make it worse!
No I had never done anything like this before I do have a reasonable knoledge of car mechanics, its pretty simple realy, the main thing is making lots of notes and pictures so you remember where everything goes back, I went a little further on mine aswell and replaced 2 valves so had both heads off at the same time. are you competent with a these sort of jobs? all i've really tackled in the past is an engine change which is very different to a strip and rebuild. kinda nervous i'd make it worse!
Just a couple of things to note if you do decide to have a go. remeber to get all the coolant out of the engine before removing the timing cover or inlet manifold or you will pour water straight into the block, there are two drain plugs one at each side of the engine plus remove the bottom hose from the radiator and take of the cap from the swirl pot and header tank. Mark all the timing before removing the distributor including rotor arm position, it will help if you make two marks for the rotor arm one when the distibutor is in place and another when you have removed it as it will turn as you pull it out, this makes it easier when it comes to realigning it on rebuild. The rest is just manual labour a lot swearing cut fingers and boxes of spares it helps if you lable the boxes (cheers quinny for that insight in your engine rebuild pages it makes the job much easier on rebuild)
Good luck mate
Chris
I'm afraid I had my Indy do it. Glad I did as discovered needed new oil pump when timing cover came off for the cam (fitted Piper 285). The exhaust gaskets were also done by him, the manifold flanges needed welding round the edge and re-machining because had become too thin for the gasket.
Nick
Nick
Gassing Station | Griffith | Top of Page | What's New | My Stuff