| Author | Message | ||
     Andrew Homan (Andy) Member Username: Andy Post Number: 47 Registered: 01-2004 |
I was wondering if anyone out there has had noisy lifter problems. at idle my 95 d1 has a tapping/knock to it. goes away when given the slightest throttle. When I was turning wrenches for the Germans some of their cars would do this and we added atf to free up the stuck/collapsed lifter. Mostly occurred on cars driven very little. My d1 runs very good otherwise plenty of power, relatively speaking, smooth and decent milage for a rover 13-14 in the city 19 highway. I don't think it's a bearing or anything deeper. Doesn't do it when I just start it up only warm. using 5w30 right now and just changed it. I hope I didn't jinks myself with all the kind thing I've said about it. Any thought on additives or concerns would be appreciated. Cheers, Andy | ||
| Dean Chrismon (Chrismonda) On Probation Username: Chrismonda Post Number: 188 Registered: 12-2002 |
I would start using a much thicker oil such as 15w40 would help. | ||
| b d e (Chrisseries1) Member Username: Chrisseries1 Post Number: 83 Registered: 03-2004 |
try a flushing solution such as wynns and change the oil frequent. maybe switch to synthetic | ||
| Nick M (Nick5o) Member Username: Nick5o Post Number: 55 Registered: 03-2003 |
I am experiencing the same thing. Get a rapping after warm up, sometimes it's not consistent, like every other time. Tried Lucas in the tank and some Gunk in the crankcase, along with a fresh tank of 93 Octane. Seemed to quiet down for a few days, but I noticed it again. Is there any mechanical way to free it up from the top as opposed to taking off the heads? | ||
| Nick M (Nick5o) Member Username: Nick5o Post Number: 56 Registered: 03-2003 |
BTW, mine is on my 91 RRC 3.9. | ||
| b d e (Chrisseries1) Member Username: Chrisseries1 Post Number: 89 Registered: 03-2004 |
the rover 3.9l are the same wether they are in a disoc or rangie. flush your oil. and change regulary. | ||
| Geoff 93 RRC (Geoff) Senior Member Username: Geoff Post Number: 298 Registered: 11-2002 |
Might be low oil pressure at idle. Also could be the bearings in an accessory driven off the engine or the tensioner pulley. Maybe use a mechanic's stethoscope to isolate the source. I have had all kinds of knocking type noises, usually muffled and at acceleration. The 2 things that had the most effect were a couple of tanks using Lucas Fuel Treatment (to clean carbon out of the cylinders which might have been contacting the piston/free sticky valves) and a new distributor cap. The old (but almost new) cap had a the center spring loaded contact internally break causing intermittant miss. Watch out for those blue caps. | ||
| peppy (Chrisseries1) Member Username: Chrisseries1 Post Number: 93 Registered: 03-2004 |
if a valve has contacted the piston in any way then it is bent! if this is the case the engine will require a valve job. or rebuild! flush the oil and change it often. cant be said enough. | ||
| Andrew Homan (Andy) Member Username: Andy Post Number: 48 Registered: 01-2004 |
Thanks for all the advice I will flush the engine and I am religious about changing oil. Just checked the dist cap and replaced a bad wire causing a miss at about 2k rpms. any recommendations on who makes the best plug wire set. I checked the rest with my fluke meter and they were good and it runs great (fingers crossed, knock on wood) now and wasn't to bad even with the faulty wire. | ||
| peppy (Chrisseries1) Member Username: Chrisseries1 Post Number: 101 Registered: 03-2004 |
look into megnacore high tension leads. also try accell universial wires they maybe easier to get! | ||
| Tbow (Tbow) Member Username: Tbow Post Number: 199 Registered: 12-2002 |
LR's are notorious for rocker problems. So most likely it's a rocker arm problem rather than lifter. To isolate the noisy one, remove the valve cover and with the engine running, slip a feeler guage between each valve and rocker. When the noise disappears that is your problem area. If you do decide to replace the lifter, also replace the rocker arms and shaft at the sametime. | ||
| Andrew Homan (Andy) Member Username: Andy Post Number: 50 Registered: 01-2004 |
TBOW, that sounds right and I may give it a shot. If I leave it be for a while will I regret it. It's not getting worse. I would like to wait till after summer and do the heads as well. Or just do a rebuild. A rover v-8 can't be to hard compared to a 32 dohc Porsche v-8 or flat turbo 6. cheers Andy | ||
| Glen Hernandez (Polofella26) Member Username: Polofella26 Post Number: 107 Registered: 11-2002 |
Having the same issues. I am having a local foreign car garage adjust the valves. Sometimes the tapping noise can be fixed by simply adjusting the valves, considering that they are healthy and the engine has been maintained. I have also heard that adding MOA to your oil will take care of the tapping noise....it's good stuff! | ||
| Bruno Tome (Bruno_tome) Member Username: Bruno_tome Post Number: 87 Registered: 01-2004 |
Take a look.. http://www.v8engines.com/engine-4.htm#v8gen BT. | ||
| Andrew Homan (Andy) Member Username: Andy Post Number: 51 Registered: 01-2004 |
Bruno Good info to have thanks for the post. | ||
| Tbow (Tbow) Member Username: Tbow Post Number: 200 Registered: 12-2002 |
Andy If the slight tapping doesn't bother you then waiting until summer is ok. Also, the lifters are not adjustable. They are all preset by the rocker towers and the head thickness. I have heard of shims available for the towers or people who have had the towers shaved to increase preload on the lifters. | ||
| Andrew Homan (Andy) Member Username: Andy Post Number: 52 Registered: 01-2004 |
If and when I tear into the engine, wheather it's just top end or complete, who do you recommend for parts that will have them in stock at a reasonable price. If the lower end is ok I may just do heads chain valves etc. | ||
| Dean Brown (Deanbrown3d) Senior Member Username: Deanbrown3d Post Number: 1595 Registered: 02-2002 |
Glen, dumb question, but how do you adjust the valves on disco heads? |
