Question about 2000 Mazda MPV
2001 toyota estima idles rough when started and runs like a tractor untill you get over 20-30km
Hi, if it sounds like a tractor and is feeling rough and less powerful than normal, my guese is the timing chain guide (possibly top guide) has come loose. If you can get van over a pit, on jack stands or on hoist and while engine is running, the noise will be louder at front of engine by the timing chain housing, you could also feel the guides rattling, hence the tractor noise. As the engine is revved to higher RPM's the chain vibrates faster and the guide is forced off the chain so the noise lesson's. Parts are available, but before ordering parts you will have to disassemble timing chain housing and check the guide bolt thread on engine side are not threaded, otherwise re-threading the hole and finding the right bolts to fit guide plates can be a nightmare, but you can use helicoil, which expensive but effective. Check also the housing, it may have wear marks due to guides rubbing on it which is not a problem, but as oil circulates through it you wouldnt want it to leak out.
Hope this helps.
Posted on Jan 25, 2014
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Posted on Jan 02, 2017
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