cooling system leak Volvo 151

[gino45]

I just got this 4 cylinder Volvo 151 engine running for the first time in 2 years. Immediately determined that impeller needed to be replaced and did that. Now I notice a leak that appears to be coming from under the timing belt cover. This cover has some strange 'fasteners' which I have never seen before. <br />The water is coming from the sea water side, not the internal cooling system. Slow drip at idle-- speeds up with higher rpms. And I'm pretty sure this is not coming down from the impeller housing.<br />Anyone know what this leak might be, or have info on the Volvo 'bolts'? <br />Gene

 

[gino45]

Re: cooling system leak Volvo 151

Well, got out there this morning when the light was better and I could see straight, and figured some things out.<br />One--mysterious bolts are rounded off allen heads. One will have to be sawn off, I think, when the time comes to change the belt.<br />Two--there's a seal on the back of the impeller housing that looks to be the culprit. A pretty minor repair. Naturally no parts available today, but ar least it's figured out.<br />Thanks for allowing to figure this out myself! Also, I'd like to say that I have learned much from this forum---mostly by doing searches on topics relevant to me--such as wire color codes,<br />timing, installing an electronic ignition, etc.<br /><br />Gene

 

[bigbad4cyl]

Re: cooling system leak Volvo 151

how do you like the performance of the 151 i baught a boat that the engine needed rebuilt .....i have my 151 in the shop being rebuilt now ,,,,im wondering what to expect performance wise